I've been looking over at gittip for a while now and saw it was doing good things for good open source developers but your homepage shows the problem. The top 2 money recipients are 2 feminists which have never seen a line of code in their lives (one of them doesn't even have a github account!). This got me really confused as to what the objective of the website really is since apparently anyone can signup and receive cash without working for it.
So that's why I don't use the website to receive or to give. I think its kind of insulting for the developers that actually do something for the community.