See, I like speaking in front of people, particularly reading a good story or something. But, it's generally more fun if it's a crowd that's already there and interested in you. If I want to spout to a random crowd, I'll go stand on a street corner. At least then, someone might give me a hot cup of tea for my pains.
I get open mic music nights. Those are fun, and I got to hear from amazing jazz work at a couple of them. I even kind of get open mic poetry slams (although the term is kind of silly...it's not a wrestling slam, dude, it's a POETRY slam! YEAH!) but even poetry slams are painful things when you get sad, sad angstful poems about My Broken Heart Is Like Forgotten Nails.
An open mic night for prose might be fun, if someone got up and did a great job reading some Tolkien to me, or some Pratchett, or some Dickens. But as it stands, I'd get someone's crummy short story, or I'd get someone reading their favoritest passage out of The Da Vinci Code, or something.
That said, I'd be willing to be surprised. It was bad rap before I was surprised by the good jazz, after all.