Ever heard of FanFiction.net? That's a site with TONS of fanfics of so many shows, books, anime, video games, you name it!
LINK:
http://www.fanfiction.net/
You can put up your story there once you have an account. People can read it and chose if they want to review or not.
Note: The bigger the fandom, the harder it is for your story to get spoted.
I have an account there myself. You have to follow the rules or your fic will be taken down but it's the
number 1 site for fanfics out there.
You can even make mini-forums to talk about whatever. Your more then likely to never get a reply in the mini-forum but you can still make it.
I'm Wolverine the biobot over there if you want to look me up.