I was just on the google-app-engine tag, which has a sponsered links section on the top. For the longest time, these were all documentation and mailing list links from Google. Now, a new one has appeared (at the bottom): This link leads to (DO NOT CLICK, I have no idea what's here because of AdBlock):
This is not a link from Google. I don't think it's a link from Stack Exchange either. So, either we, or Google, has been hacked by some spammers. What's going on?!?
EDIT: The rest of the sponsored App Engine links lead to the same add site, with a slightly different URL.
EDIT: It's the same on every Google sponsored tag, but not other ones, like Facebook.