So far, I do like it better than the drop-down box. Less clicking, especially since my mouse is often possessed. It might be interesting to include a "summary" of known stuff about each of the options, though... e.g. a quick check to see if the account exists, and perhaps an indication that it's been Jouled before, for example:

"I believe you have accounts here:
* HoopyCat on Twitter (Jouled since May 3rd)
* HoopyCat on LiveJournal

You can also check for HoopyCat on identi.ca, digg, etc..."