I have started using tublr some time ago and really love its bookmarklet features (and actually the service itself too). So, I decided to implement bookmarklet that implements at least one of the features I like - ability to twitt selected text. Bookmarklet itself is very simple, as twitter itself, so I think there is no need to explain a lot. You just need to drag the following link to your browsers bookmark menu.
Once the bookmarklet is on your bookmark bar, you can select any text on any page and post it to the twitter by just pressing the bookmarklet.
Feel free to test the bookmarklet on this post and tweet it By the way, you can find similar Facebook bookmarklet here.