here's creepy: Pay attention to the ads on the right as you read your email in Gmail.com.
It's like a reverse groupie following you everywhere. Pull into a McDonald's and he tells you what's on special today at McDonald's, Wendy's, BK, and Dairy Queen. Stop at a light and he tells you about ways to beat the traffic cops, better lighting for your house, better fuel economy techniques when pulling away from the stoplight, and reasons to leave the air off and roll your windows down.