I like a TV show, I “check-in” on Get Glue, that sends a message to my Facebook friends telling them I like this show. My friends then decide they should watch this show because if I like it, they’ll like it. They have been influenced by my suggestion.
Kevin Lewis, a Harvard sociology graduate student, co-authored a study about peer influence on social media networks. Speaking to Wired, Lewis stated that the results showed that “the extent to which friends’ preferences actually rub off on each other is minimal.”