TwiTango is yet another simple extension to posting context messages to Twitter.
Select text on web page as you do it for copy to clipboard. TwiTango has to display its icon - blue bird in the yellow square. Click by icon. Will open Twitter window with selected text in the message field if you are already logged into Twitter or logon to Twitter form if you are not logged or not registered yet. Login, edit you twit, send twit to Twitter. Close Twitter window.