I caught this clip about the new Tabbed Out iPhone app on Headline News yesterday (and the story again as a preview for the late local news).

Part of me wants to think that this is a very cool innovation in the world of bar payments; another part of me thinks it's a solution where there isn't a problem.

The key is that Tabbed Out is really only a useful tool at bars where a significant number of the customers have smartphones and are willing to use them for this purpose. I don't know if that critical mass exists or if it ever will. Maybe it does in a few bars in cities like Austin and San Francisco; but I think this one, for as cool as it is, might be a pretty tough sell.