I just watched the Ubiquity video again for the first time in years to refresh my memory. It's pretty awesome. But it's also a pretty major project that Mozilla can't really do themselves. Web sites need to implement "verbs" for it to work. And browsers other than Mozilla need to implement it too.
That said, I hope it comes back to life and improves. Hey, maybe this /. post will entice some readers to become Ubiquity developers. Maybe Google can help too and bring it to Chrome - and I don't mean as an extension, but a built in feature (Firefox too). If it's built-in, as opposed to an add on, more users will have access to it and web site developers will have a bigger audience to code verbs for.