Some Twitter users can a bit like lemmings, retweeting or otherwise repeating exactly what other Twitter users do whenever something cool is going around. Everybody wants to be different, but they still want to exist as part of the in-crowd and participate in a group activity.
Some memes, like #Honk, exist just to be silly and fun.
Sometimes, a meme is grown out of necessity before it takes on a life of its own.
#FollowFriday was the brainchild of Micah Brown. The concept was simple: all Micah wanted was the names of other cool or interesting people to follow on Twitter (since finding those people on your own can be a daunting experience as Twitter doesn’t have a “I’m a cool person” checkbox on the user profile pages that others could search on).