BackTrackr is in public beta at the moment. Just add @backtrackr as a friend at twitter and backtrackr will automatically pick up your links. You can look up all your posted links and backtrackr even creates your own rss feed with your posted links. It's just that easy! So add backtrackr as a friend and your done! Do you like backtrackr? Try autopostr.com as well. Autopostr.com makes saying 'hello world I posted a photo' really simple. Just add a # to the title of your flickr photo and (after registring) autopostr.com will automatically post a tweet to all your twitter friends. That easy!