Well, OC-centered fics I don't usually read. I don't know why not. I've read fics where there are OCs that are secondary characters, but excellent. The thing is, I guess OCs don't catch my interest fast enough. Which comes to the point where a_t_rain is correct. OCs have unlimited possibilites and what we're interested might not be interesting to someone else.

There has been one OC fic, but I think that was about Harry and this little girl. I can't remember very well but it was well known. =\

Or maybe I have a faulty memory. I still can't remember anything about this one fic I'm searching for other than the fact that it was a hilarious parody that might've been on Schnoogle. *shrug*