I think this is a good move for Gittip, to get away from the notion that it's a model just meant to support software development.
The central idea of Gratipay is to support good people doing good work, through recurring donations. That's a model I'd like to see take off, in many fields.
the new brand allows them to introduce the idea to more than just supporting software development; however i still find it's hard to pronounce the new name (english is not my first language). i much prefer 2 syllables domain than 3.