>I don't want to have to view every minor action that I make on a website as something that's potentially going to be on the front page of google's results for my name.
It's true that I try to make every post to the Internet be something that I wouldn't worry about showing up in such a search.
But as a result, when people find me, they do have a lot of real data about me -- and I get job offers and consulting offers all the time.
I do not think it's a bad thing to be able to be Googled; what's a bad thing is to let yourself be a jerk online -- and it's important to Google yourself from time to time to see if something like your friend's page is showing up.
The Meetup point is a good one, though. It would be nice to be able to (optionally) conceal your presence in a Meetup. Be it related to atheism or religion or sexual orientation or recovering alcoholism or even stamp collecting or trainspotting, there are a lot of groups that one might want to join that they wouldn't necessarily want to shout about to everyone. And that's not the fault of having a unique name -- anyone in any Meetup group that I'm in will certainly be able to "out" me as a member of any other Meetup group that I'm a member of, even if I'm named John Smith. And it's entirely likely that I'll share professional Meetup groups with potential employers.