I'm a fan of
Twitdom. The site categorizes nearly 2,000 applications built specifically for Twitter and reviews apps like Twitgether, Twaxed, Twittori, TwitMesh -- well, you get the picture.
I've monitored Twitdom for the last several months specifically looking for financial services apps for Twitter. Only
nine of the nearly 2,000 apps relate to financial services, and a new FI app hasn't appeared on Twitdom since mid July.
The conclusion I am coming to is financial services innovation is just not coming to Twitter. Now, the TwitBanking scene may change, but I'm not encouraged by its prospects today. As far as banking is concerned, the Twitter phenomenon may turn into a dud.