Nyaa~~~ My funnybone hurts/tingles/feels funny
Warning, before you read the rest of this post, please remember that I'm a yaoi fangirl, I cannot stress this enough
I used to RP a lot with a few select friends, but I found that save for a few people, everyone would make Mary Sues/Gary Stus/watevs
So in 1vs1 RPs, I would usually use my side of the story to essentially teach them storywriting techniques. Also taking down their characters via t3h p0wah of logic. That's why I always ended up playing seme characters /ho!
My fellow fangirls friends would usually be the ones to decide on the setting of the story, which were usually rather stereotypical ideals, but I'd end up the one leading the story elements.
I've only been in one large/forum RP and you always always have Mary Sue problems. Totally not a fan of mass RPs because of this. Everyone just wants their dream > 3> It's always a case of everyone wants to win and no one wants a story.
And when someone wants a story it'll always be an exact copy of some other popular story.
So yeah. F&*# that. Random S@*$ is your best bet if you wanna RP with a huge amount of people.