Rapid rise in social media users has spawned a new form of advertising for businesses called social media advertising. Advertisers have long faced one of the most important challenges: low consumer acceptability of commercials. It is vital to identify the most salient elements of social media...

Micro-auction donation crowdfunding is launched by celebrities who offer the auction items for free, and items contain physical goods (celebrity clothing) and virtual goods (a donated tweet from the celebrity), and the highest auction price accumulated by many donors' small donation is used to...