Here's a few places you could try:
* reddit
* digg
* Facebook
* MySpace
* del.icio.us
* StumbleUpon
* Buzz Up!
* Mixx
* Technorati
* Google Bookmarks
* Yahoo Bookmarks
* Yahoo! My Web
* Windows Live
* Propeller
* FriendFeed
* newsvine
* Xanga
* LinkedIn
* blinklist
* Furl