As many of you were aware, Google announced that they were going to kill off Google Buzz. It looks like they finally shut off the Google Buzz API, which means the leenk.me service can no longer post to your Google Buzz accounts. Please upgrade your plugin to remove the Google Buzz options.
If you'd like some more information about this, please read Google's Fall Sweep announcement. As soon as Google opens up their Google+ API for posting, I will be adding it to the leenk.me service.
P.S. I'm working on a pretty big update for the plugin, should have a lot of nice new features. Including the ability to change your URL shortener, a better interface to see what your posts will look like on the fly, and I expect it will be a lot more efficient! Coming soon :).