The Japanese version of TamaTown, e-tamago, was launched quite while ago. Late November 2005, I think. As late as February or March 2006 there were still some areas under construction. It's still being added to. Just a couple of days ago they added a new game to the school. Some of the games in the Japanese site are sponsored by other companies. In Gotch Station there are games sponsored by JAL (a big Japanese Airline company), Kirin Beverages, and Ciao comics. I'm not sure if Bandai-outside-of-Japan has plans for sponsored games, but I'm sure it would speed things up a bit if they did.
I think TamaTown would be a good advertising space. I wouldn't mind seeing a Coca-Cola logo, or something like that, embedded into a game, if it meant we'd have more games or activities in TamaTown. What do you think about sponsored games in TamaTown?