anon above me sounds extremely jaded. i've seen some bad OCs, sure, but i've seen plenty of good ones around too and they always seem to get a fair amount of play imo as long as they're done well and their tags are giving others interesting stuff to respond to. there will probably be people here and there who ignore OCs just because they're OCs, but there are people who refuse to play with LA or anime characters or whatever so it's not really worth worrying about. if you're having trouble getting anywhere with an OC, resist the urge to get a victim complex about it (as i feel most people who complain about DW bring so anti-OC are) and instead consider that the issue might be more about a lack of hooks in your tags or cliched/bland characterization.

basically, just poke around for a game that seems to have a friendly atmosphere that accepts OCs and go for it. focus on finding a setting that interests you, and maybe aim for a smaller game if you're really worried about getting play with an OC - big games might offer more possibilities for CR, but it's also easier to get overlooked imo, while small games tend to foster CR easier since everyone knows they don't have as many options and can't be super picky about who they're tagging.