The Young Writer's Society is a website skewed, obviously, toward young writer's. Here you can post your stories and poems, in addition to being able to receive comments about them. It's just starting up so it's not that big yet, but that also means you will not be overlooked (unlike other sites). Anyways, if you're interested, the link is:
http://yws.nathancaldwell.net/
Look forward to seeing you there,
Nate