I've had high hopes for Diaspora. Gave them cash when they were on Kickstarter. Tried hosting my own Diaspora server. Waited for the devs and the community to do something with the $200,000 they raised.
Certainly a lot of hackers have done much more with much less.
In the year since Diaspora was announced, though, not much has happened.
Ask anyone in the general public if they've used Diaspora, and you're more likely to get a confused "what's Diaspora?"
At the end of the day, there's really only one measuring stick for a social service: users. We use social sites to communicate with our friends and followers. Facebook is deeply flawed, but people have stayed there because people were staying there.
G+ looks like the first real opportunity for people to leave Facebook without losing the connections they've become addicted to. If G+ is going to be the new default for sharing online, I really just want three things.
1. Let me control my data and my privacy.
2. Play nice with other sites, protocols, and standards.
3. Provide a great user experience, including "borrowing" from other places when it makes sense.