I rarely click on AdSense ads (and never on my own site), but I couldn't resist this one.
Cheap Tickets (with a Google Checkout shopping cart) find information on cheap tickets - Search for it on Google. www.google.com
It took me to the SERP as though I just did a search for "cheap tickets" on Google.
I think this is a deceptive ad because it doesn't take you to a site about cheap tickets and since Google isn't selling anything, why is the Google Checkout shopping cart displayed? Further, I'm not aware of any travel seller that accepts Google Checkout, but that's beside the point.
Why is Google stuffing their SERPS in Adsense ads?