For now, it's so much easier to not do anything but provide our critique on the work of others.
I only expressed my melancholy given that Diaspora didn't catch on even though it had a very promising start. It's also quite sad that I still have to use Facebook (to keep in touch with friends, get invitations to events, etc.) even though I know that my rights are infringed on a regular basis.
I've founded and co-founded several start-ups myself and I know that failing sucks and that it's (very) hard to succeed. But to argue that the Diaspora guys were just "another" run-of-the-mill basement start-up is not fair. They had a $200k head start and significant media coverage before they wrote one line of code.
Could it be that they concentrated too much on the product early on?
Let's not forget that they also lost a founder a year into the project.
Even if Diaspora ends up being an amazing service (in the next 1-2 years), I won't be able to care because my friends aren't on it. And no one else will care because Diaspora hasn't been in the news for years.
Edit: and let me just say that when compared to Zuckerberg, the Diaspora team had a significant head start. A 200k seed and great news coverage beats the hell out of some kid starting a semi-dating site for Harvard and then trying to compete with the (hugely popular) MySpace.