I am definitely happy for them. Because, after all, we all work for making impacts. While sparrow is already making an impact on people using Mac and iOS device

I am definitely happy for them. Because, after all, we all work for making impacts. While sparrow is already making an impact on people using Mac and iOS devices. It is only a subset of people that can be benefit from their effort. But joining Google, maybe they get to improve the Gmail experience for everybody. I think this is the most logical thing to do.