WebLaunches

The stickers are designed for laptops, but they’ll work just as well for placement on mugs, skateboards, or temporarily on a shirt.
send Google a self-addressed, stamped envelope with enough postage to return 1 oz of sticker goodness to you from their office in California via standard U.S. mail. (Sorry, we can’t help you calculate the [...]

I got a message from Google that third party ads are now available. And if you’ve enabled image ads, then you are opted to third party ads as well.

Link to the Google Adsense blog post
http://adsense.blogspot.com/2008/05/introducing-third-party-ads-on-google.html