Diaspora's going to do one of two things. Option one, with approximately 98% probability, is "fail hard". A few geeks will run nodes and brag about it on places like HN, and that'll be it. Option two is that Diaspora succeeds, which will require some way around making everyone run their own node; basically, some company with the infrastructure to step in and host services for people, for cheap or preferably free. If…
2. Let's do the math: FB valuation is 25B. 2% chances * 25B = Expectation of 500M. In these terms, a 250K kickapp funding is super-super-smart move :)
3. The question is not if Diaspora succeed but if the open source community can produce a distributed solution that will have non-geeky clients. It takes time, sure, but you have got to start somewhere (maybe the Flock social browser should team up as a non-geeky client?)
4. Hosting is no problem. It's like Wordpress hosting, it's done everywhere for cheap (and these are the bad news for J.Fried)
5. Google or FB? I prefer Goog.