This addon send your posts to your Twitter account. Posts can be sent when uploaded (don't use this for future posts) or you can pick from any of your posts to send to Twitter.
I was wrong first. The link of twitter was broken because it had used the subdomain with the admin panel. Now, it became perfect. It's a wonderfull addon!
it does not work here. empty page after press "twitter this photo".
It does the job great, only thing is it appears to post it twice in my Twitter and I'm not sure why. The first one always has no title and only posts the site itself and the second one posts with the title and is the link to the actual image.