Twitter is addictive. Everyone's talking about it! I use it extensively. So here is a userscript that sends tweets right from your firefox.
I decided to create a userscript that sends tweets right from Firefox. I got the UI idea from Aditya's Definr userscript, which is one of the best I have ever seen.
TwitterScript, as I have termed it, adds a tiny div element on the bottom right corner of Firefox. For instant access to the input field, hit SHIFT+ALT+T.