Flickr4Twitter is a very new and raw site at this time but will allow you to post from Tweetie 2 to Flickr or via their website. It uses oAuth and allows you to see what you posted and what other photos have been uploaded and tagged.
I wish there was more to say, but it is alpha and doesn’t have a completed UI yet.
Filed under: Add-on Tools , Flickr, photos
Thanks for mentioning Flickr4Twitter. We’re probably ready to move into the beta phase as most of the features we’ll be working on next are primarily UI tweaks and a few extra features per user preference. Feel free to let us know if you have any questions or ideas (http://twitter.com/flickr4tw1tter).