[idupree]

Yep. Google probably knows my address, phone number, email, and name, not because I've told the Internet, but because I told a friend how to drive me home and he entered it in his Android smartphone's address-book. Or was it Apple..then Apple knows (I forget).

(well, I did because I participated in GSoC, and they needed my address to pay me, which I decided was worth it for me! Etc. etc.)