Friends and Followers

Aren't there enough apps using then “friend” and “follower” metaphor yet?

I know we’re in a social web era but still, is it really all that necessary to keep connecting or finding people of interest each time we try out a new app? Isn’t there a more interesting niche to explore other than the one related to who we meet and connect to?

I'm sure there must be somewhere else to innovate that doesn't involve this particular model.