Richard M. Smith is giving the name 'web bugs' to image tags that track your web usage on sites that use them. He has a FAQ the topic, and guess what? The recent Doubleclick tracking fiasco only tells half the story. It's worse then you think; some sites that aren't affilited with DoubleClick are helping them track you anyhow! (This was actually news to me; check it out even if you've been following DoubleClick in the news.)