Psychologists, sociologists and new media marketingologists name this highly effective dynamic “social proof.” Most of us much less scientific sheep do not name it something. We merely select to comply with the gang.
How to Incorporate Social Proof on Every Page of Your Website
Twitter removes share count from share buttons unless you have the money to get the data. Author believes web site owners will replace Twitter with other share buttons like Pinterest that still show share count
Social Proof Website Tips Which Change Everything [Infographic]