OpenID a good thing?

I dunno. The privacy issue worries me. Our IP address and (site and ad) cookies and whatnot already track us to lots of places on the internet, but using an OpenID seems like a good way to close the loop - to help corporations and governments really keep close, accurate tabs on everything you do online.

For all the OpenID stuff I've read about over the past few months, not once have I read anything about privacy. I actually don't understand the technology at all, so it's possible that I'm missing something - but any technology that is draped in buzzwords like 'centralization' and 'single sign-on' seems like a bad idea for anyone worried about privacy.