Continuing this series on privacy, here is a link to find out what Google thinks you like, which they use to created targeted ads for you. It also allows you to opt out. Of course, as an astute commenter noted, opting out won’t stop them from collecting this data, they just won’t use it for ads.
Asides
Private Sites Are Watching You
Collusion shows you how the various ad networks track your movements across sites to deliver more targeted ads. The visualization is pretty cool. It suggests TrackerBlock, a Firefox plugin that maintains your privacy while you surf.