(and get good reviews)
First of all, check out this shameless site promotion: Livejournal, like, woah.
- Eons Writers Club
---Providing plenty of good drabble challenges and from what I've seen, a pretty good collection of writers, this site would be great for getting your stuff out there.
- deviantart.com
---Yes, it's an art website, but now it's one that features writing by you! Go out and get your word on, put it up and see the results! Reviews should be quie prevalent, seeing as people already review for art more than is probably socially healthy.
- theword.zentao.com
A site with weekly updates on a variety of fiction sites as well as market information for the real world. It could be of particular use when you want to get off the internet and out into the real world. Which I don't understand myself...