I've never understood people's abject paranoia towards Google. It used to be Microsoft and now apparently people was fearful of Google. The more a corporate identity rises in the public awareness, the more people become skeptical. Persisting data between page visits has been around since the advent of web browsers. It is a trade off sure, the more a browser and web server knows about your habits the more able it is to serve up relevant content, etc.
I'd argue Elliquiy knows more about my private habits than any site. All of my dirty little secrets are stored in its database after all.
Select * From Stories Where User = 'Zamdrist' - Yeah that is ad hoc I know, just sayin'.