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The purpose of this paper is to test the effects of two types of celebrities (Instagram celebrity vs traditional celebrity) on source trustworthiness, brand attitude, envy and social presence. The proposed theoretical model consists of the celebrity type as the independent variable, social presence as the mediator and self-discrepancy as the moderator.

A randomized two-group comparison (Instagram celebrity vs traditional celebrity) between-subjects experiment (n=104) was conducted.

The results indicate that consumers exposed to Instagram celebrity’s brand posts perceive the source to be more trustworthy, show more positive attitude toward the endorsed brand, feel stronger social presence and feel more envious of the source than those consumers exposed to traditional celebrity’s brand posts. Structural equation modeling (Mplus 8.0) and bootstrap confidence intervals indicate that social presence mediates the causal effects of celebrity type on trustworthiness, brand attitude and envy. Multiple regression analyses reveal the moderating effects of appearance-related actual–ideal self-discrepancy.

Ultimately, managerial implications for social media marketing and Instagram influencer-based branding are provided. From the perspective of marketing planning, the findings speak to the power of influencer marketing as an effective branding strategy.

The paper discusses theoretical implications for the marketing literature on celebrity endorsements.

The purpose of this study is to identify the process of virtual influencer stickiness in the age of influencer marketing, which has received little attention in the literature. This is essential because the research creates a theoretical model of follower loyalty/stickiness to virtual influencer techniques from the standpoint of influencer marketing, which has a substantial effect on the evolution of the global marketing world.

In 2022, 302 people who currently follow an Instafamous virtual influencer took part in an Instagram self-administered online survey.

The findings show that both expertise and trustworthiness have a positive and significant influence on parasocial interaction, which in turn has a significant influence on virtual engagement and stickiness.

This research will specifically assist international readers in understanding how to harness and increase the efficiency and efficacy of interactive marketing strategies and methods to engage and retain followers of Instafamous virtual influencer. Moreover, the findings will be beneficial to opinion leaders, brand managers, company investors, entrepreneurs and service designers.

1. The study pioneers a holistic virtual follower stickiness mechanism that comprises the role of source credibility, parasocial interaction, informational influence and virtual follower’s engagement and their interrelationship to each other.

2. This study is based on parasocial interaction theory and source credibility theory to understand the relationship between virtual followers and influencers stickiness process at social media platforms.

3. In addition, the study examined the subsequent effects of sources of credibility components on parasocial interaction; as well as, on virtual follower engagement and stickiness.

4. This study also categorized and examined the moderating effects exerted by the genres of informative influence of virtual influencer.

The study pioneers a holistic virtual follower stickiness mechanism that comprises the role of source credibility, parasocial interaction, informational influence and virtual follower’s engagement and their interrelationship to each other.

This study is based on parasocial interaction theory and source credibility theory to understand the relationship between virtual followers and influencers stickiness process at social media platforms.

In addition, the study examined the subsequent effects of sources of credibility components on parasocial interaction; as well as, on virtual follower engagement and stickiness.

This study also categorized and examined the moderating effects exerted by the genres of informative influence of virtual influencer.

Social media influencers (SMIs) have become an important source of influence that affects consumer behaviours in their decision-making processes. As such, this justifies scholarly attention in understanding how SMIs transfer their meanings to endorsed brands and drive consumers’ positive behavioural intentions. With the intention to fill this knowledge gap, this paper aims to examine the impact of SMIs’ credibility, as manifested by trustworthiness, attractiveness and expertise, along with the moderating effects of materialism, on followers’ purchase intention.

Self-administrated online surveys were used to collect data from Instagram users. A total of 191 usable data were collected and analysed using partial least square structural equation modelling.

The results show that SMIs’ trustworthiness and expertise are significant predictors of followers’ purchase intention. Moreover, the moderating effect of materialism on the relationship between attractiveness and purchase intention is significant. Notably, the influence of attractiveness on purchase intention is greater when materialism is high.

This research contributes to the SMI literature by examining the influence of SMIs’ trustworthiness, attractiveness and expertise, along with the moderating effect of materialism, on followers’ purchase intention.

With the popularity of social media and, recently, live streaming, internet celebrity endorsements have become a prevalent approach to content marketing for e-commerce sellers. Despite the widespread use of social media and online communities, empirical studies investigating the economic value of user-generated content (UGC) and marketer-generated content (MGC) still lag behind. The purpose of this paper is to contribute both theoretically and practically to capture both first-order effects and second-order effects of internet celebrity endorsements on marketing outcomes in an e-commerce context.

This study conducts a cross-sectional regression to evaluate the economic value of internet celebrity endorsement, and a panel vector autoregressive model is adopted to examine the relationship between celebrities’ and consumers’ content marketing behaviors and e-commerce sales performance. The authors also adopt look-ahead propensity-score matching technique to correct for selection bias.

The empirical results show that the content generation efforts of marketers and the interaction behaviors between marketers and consumers will significantly influence the e-commerce sales, which refers to the first-order effects of internet celebrity endorsement. Moreover, interactions within the fan community exert second-order effects of content marketing on sales performance.

This paper provides new insights for e-commerce retailers to evaluate the economic values of internet celebrity endorsement, a new content marketing practice in e-commerce platform.

The purpose of this paper is to examine how influencers' visual content affects consumer attitudinal and behavioral responses to influencer advertising. The proposed model includes smile intensity of influencers as the independent variable, warmth and admiration as the mediators and product category (Study 1) and orientation of advertising messages (self vs social, Study 2) as the moderators.

Two experimental studies (Study 1 and 2) were conducted. A total of 337 online panelists were collected via Qualtrics in Study 1 and responses from 409 online panelists were collected via Qualtrics in Study 2.

The results of two experimental studies showed that smiling influencers increased perceptions of warmth and feelings of admiration, thereby evoking positive consumer attitudes and behavioral intention. The strong positive impact of smiling on responses to influencer advertising was present regardless of product categories (Study 1) and the orientation of advertising messages (Study 2).

This study empirically examined the role of visual content on consumers' attitudinal, emotional and behavioral responses to influencer advertising by adopting theoretical models in social psychology. This paper also provides strong managerial implications for marketers who seek the most effective strategies for leading consumers to evaluate influencers positively and ultimately, accepting marketing messages favorably.

The purpose of this paper is to describe the industry panel session hosted by Bond University Library at the Australian Library and Information Association's Information Online 2013 Conference. The panel was held to discuss the use and implications of professional Instagram profiles. The panel included a professional photographer, an internet marketing expert, a social media expert, a librarian and a social media‐savvy student. The inclusion of a range of perspectives from outside the library aimed to provide a holistic approach to the institutional use of Instagram and to provide inspiration. The panel took place on Wednesday 13 February 2013 in Brisbane, Queensland, Australia.

The panel discussion covered three broad topic areas: the popularity of Instagram and listening to your audience. The risks, limitations and disadvantages of using Instagram. Engagement with followers and measuring the value of Instagram. Throughout the panel session live mobile polling was used to gather feedback and responses from the audience in regards to their photo‐sharing practices. Real examples from Instagram profiles were shared to stimulate discussion. The session concluded with a Q&A session from the audience.

The session was attended by approximately 80 delegates. The results of the mobile polling will be included in the body of the article. Based on feedback from delegates on Twitter and Facebook (which was collated via Storify) the session was perceived as a useful introduction to a professional exploration of Instagram and photo sharing.

The session was an opportunity for conference delegates to hear about Instagram use from professionals in other fields. Each panel member contributed a unique perspective on the use of Instagram. In particular, the inclusion of a current Bond University student on the panel allowed for a customer's perspective on the library's use of Instagram. This discussion and the feedback gathered from the audience has formed the basis for further evidence‐based research.

To date, few libraries are using Instagram. This discussion on the professional use of Instagram contributes to the body of knowledge about library social media use. It also extends the conversation to include mobile photo sharing, an area which has not been well addressed in the literature. This panel was unique in that it brought together professionals from other environments to reflect on library use of Instagram.

This study aims to investigate consumer decision-making styles (CDMS) in the context of street food. In addition to the original CDMS constructs, two additional constructs, namely food safety risks and environmental risks, were included based on relevant literature. Furthermore, the study explores the moderating role of social media celebrities (SMCs) in bridging the intention-behaviour gap in street food consumption behaviour.

The data were collected through an online survey, with 300 participants providing useable responses. Partial least squares (PLS) analysis was employed to analyse the data.

The findings indicate that out of the eight identified CDMS, six styles, specifically recreational (hedonistic shopping consciousness), price consciousness, novelty-seeking, impulsiveness, confusion due to over-choice and brand loyalty, significantly influence consumers' intention to consume street foods. Additionally, the results support the moderating role of SMCs. This suggests that the presence and influence of SMCs play a significant role in shaping consumers' intention and behaviours towards street food consumption.

This study contributes significantly to the literature by adding two additional constructs, namely safety risks and environmental risks in CDMS. Moreover, this study fulfils the intention-behaviour gap in street food literature by exploring the moderation effect of SMCs.

The purpose of this paper is to introduce emulation marketing as an important strategy to consider for services marketing researchers and practitioners, given the ability to plant an aspirational goal in consumers' minds. Building on theories of lifestyle, values, self-concept and others, this conceptual paper presents the case for emulation marketing as an important consideration within services marketing.

To explore mechanisms that will define service research in the future, this conceptual paper reviews the literature across the spectrum of social comparison and learning, social adaptation, conformity, values, persuasion and role modeling. The authors analyze existing theories while proposing a new mechanism, emulation, to advance research in service literature.

This paper suggests mechanisms to promote emulation in services marketing through the consumer decision process. A research agenda for future work is provided with emphasis on lack of emulation, emulation and status, emulation and aging, emulation and technology, emulation and linguistics and the dark side of emulation. Within each area, a series of considerations are discussed.

This paper introduces emulation as an important mechanism within services marketing. It offers a research agenda focused on a variety of emerging areas in the field. The paper contributes to services marketing and future research by proposing a novel approach, via emulation, to services marketing.

E-commerce live streaming is a new influencer advertising method that allows influencers to interact directly with consumers on e-commerce platforms. Although evidence suggests that influencer live-streaming advertisements (ads) on social media can increase consumers’ buying impulses, little research examined how this similar but new advertising method on e-commerce platforms may influence consumers’ urge to buy impulsively. This study explores the role of influencer credibility, celebrity effect, perceived entertainment, trust and perceived usefulness on consumers’ attitudes toward influencer ads and their urge to buy impulsively.

A questionnaire containing seven constructs was developed and distributed to participants using a convenient sample and snowball sampling approach. The constructs were measured based on validated measurement items from the literature and adjusted according to this study’s focus. A total of 236 valid responses were obtained from the survey and used for data analysis. A partial least squares structural equation modeling approach was employed for parameter estimation and model testing.

The empirical results show that all constructs influenced consumers’ urge to buy impulsively via attitude toward influencer ads. The proposed research model explains 61.7% of the variance in attitude toward influencer ads and 19.4% of the urge to buy impulsively.

This is an early study investigating the relationship between influencer advertising and impulse buying. The results provide valuable insights into improving the design of influencer ads and marketing strategies.

1. I-eIB model tests the mechanism of influencer ads on consumers’ buying impulse.

2. Consumers’ attitude towards influencer ads affects their urge to buy impulsively.

3. Influencer credibility affects consumer attitude via celebrity effect as a mediator.

4. Trust affects consumer attitude via perceived usefulness as a mediator.

5. Entertaining ads help develop favorable consumer attitude.

I-eIB model tests the mechanism of influencer ads on consumers’ buying impulse.

Consumers’ attitude towards influencer ads affects their urge to buy impulsively.

Influencer credibility affects consumer attitude via celebrity effect as a mediator.

Trust affects consumer attitude via perceived usefulness as a mediator.

Entertaining ads help develop favorable consumer attitude.

The study aims to explore why consumers engage with ordinary celebrities on social media by identifying the influential characteristics that have engaged followers and have led to opinion leadership on visual platforms, such as Instagram and Facebook.

Qualitative data were collected from 32 social media users following at least one ordinary celebrity on Instagram and Facebook in Qatar and Tunisia.

The findings of this study highlight five main characteristics that lead to fame and opinion leadership on social media visual platforms: credibility, storytelling and content quality, fit with the platform, Actual and aspired image homophily and consistency.

This research is, to the best of the authors’ knowledge, one of the first studies that highlight the features determining opinion leadership on visual platforms such as Instagram and Facebook. Second, the results of the study highlight some features that distinguish ordinary celebrities from traditional established celebrities.

The findings of this research represent a guideline for effective influential marketing development. Based on the results, recommendations are provided for companies, influencers and social media users who aspire to become influencers.

This research, to the best of the authors’ knowledge, is among the first to shed light on opinion leadership through ordinary celebrities on visual social media platforms, such as Facebook and Instagram, and thus, adds new insights to the area of social media marketing.