AOL’s mail was recently remodeled to feature an ad along with every inbox. Today’s ad reveals what we already know: the ad servers are always watching.

Amazon sees that I’ve been writing about Zenith. Admittedly this isn’t nearly as intrusive as the ads that respond to what you’ve been whispering near your cellphone, but I don’t have a cellphone or a camera or a microphone, so Amazon has to grab onto the only available handle.
