One of the biggest reasons KMC has its charm is it's old school. Socialising on the internet used to be being at a computer after work/school and talking to anonymous posters who are mostly identified by their username, avatar and signature.
I mean, a username like Broly would mean this guy likes DBZ, possibly other anime or video games, (and possibly gay for buff men with spiky hair)
An avatar of Kirk would mean this guy likes Star Trek, possibly other sci-fi or classic TV shows, (and possibly gay for Zulu)
A signature with different pictures of Hermione Granger at different ages in the films would mean this guy likes Harry Potter, possibly British actresses (and possibly paedophilia)
So, it's more about their interests rather than their popularity or identity.