ReadWriteWeb

This hasn't been a good past few weeks for Facebook. Growing concerns over what Facebook's deliberately doing to your privacy collided with news about what Facebook's doing accidentally with your data.

While a great deal of the world was sitting, enthralled with the US political machinations, it appears that Twitter - the microblogging service with which many of us have a dysfunctional love-hate relationship - took the opportunity to roll out a new piece of functionality through its Japanese partners - called Twicco - and simultaneously remove a critical piece of functionality from Twitter for the rest of us.

The good news? Twitter now has that groups feature you've always wanted - if you happen to be located in Japan. The bad news? Hope you liked that last tweet, because there's no getting rid of it now.