I'm sure it was at the back of your mind but did you know that pretty much everything you do on the web exposes just a little bit more about yourself? In the grand scale of things, you don't really have so-called privacy.
Search engines collect your search queries and if you're signed in to Google, they can attribute that search to a name. Facebook is even worse. They have privacy settings that most people don't know about. Go to Privacy Settings > Applications > Settings and poke around. Think of how much people can see with your current settings.