I think it is wonderful how these forums have a way for comedians and writers to showcase their work for feedback. It's a really constructive and supportive environment. If anyone is interested in additional opportunities to share their work with online viewers, there is a website starting up called You Now which allows artists of all kinds (including comedians) to participate in live broadcasts to showcase their talent. Think of it as an open mic, but from the comfort of your own home and computer.
Check out http://www-vd.livekick.com/ and reply to this thread if anyone wants to showcase themselves here!