They know where you live... [1]
Well, not exactly. But if you've ever wondered just how much information about you your searching patterns can yield, this article from Wired News [3] may be enlightening. Cookies certainly offer some details about you, but registering for a site like My Yahoo! [4] gives much more information to their parent sites. The article offers links to the privacy policies of some major search engines (which I had never bothered to look at before), and it also offers some tips to help you maintain at least some anonymity on the web. Of special interest to me, as I just signed up for one, it offers some strong concerns about Google Gmail [5]. All in all, an interesting read.