We don't have a wanted page. Though in hindsight, I should probably pop one up ...
Mostly, characters that have some tie to those in play are the ones we're interested in, but I'm definitely not opposed to integrating non-associated characters or OCs. A few of mine have no set lines at the moment. We're cool with hosting, too, if someone wanted to bring a line in with a friend or whatever. It's just a kind of "I had this idea but didn't want to make a game" thing.