I've just breezed through this thread, and as a fairly succesful writer, here' why i post so much in critique.
1 I many be good at writing some stuff (e.g. short and topical), other stuff I suck at (e.g. general, light news etc), and I can't get stuff on Tilt. I wanna know why, and I wanna know how to improve it. I also goto the London Writers meeting, and truly value feed back there.
2 Sitting in you're squalid writers pit banging stuff out, in the belief you're funny. Is to me the equivalent of having a wank, and hoping to get pregnant.
3 I'm not as funny as I'd like to think I am.
4 Anything good I post up, has already been posted all over the place, and often performed.
5 Good skits are not that valuable commodity. Look at many skit shows on broadcast media, they'd rather it they're own shit, than you're chocolate.
6 I know of at least 3 writers who've seen they're stuff improve markedly for good feedback. I'm one.
7 Prodcos will say yes or no, and pretty much that's it. I need to know of my stuff was realistically good enough before it goes out the door.