Update Twitter from any browser with a bookmarklet
Add Twitlet bookmarklet, and you've got a handy way to send updates from anywhere. To get started, head over to the Twitlet site and click the create button - you'll then be asked to provide your Twitter credentials. Drag the generated link to your bookmarks toolbar, and you're finished.
Just click the button (or the link in your iPod/iPhone favorites menu) and a pop-up window appears with single blank for your status update. If you want to include the URL you're currently viewing, just add #this or #link to your update, and Twitlet automatically generates a truncated URL via is.gd.
It's a nice option for users that either don't want to use a full-blown addon or can't because of their browser.