I had a bit of a shock this morning. I was logged in to Google, doing a normal search thing.. you know, click a link, click back, and then WHAM:

Crazy times we're living in. Now, I don't even need to tell you how this will affect Search Engine Optimization. Now there's a whole new technique those black hat marketing people can use to make their pages rank higher: Make them more useful!

Update: It seems pretty random. It disappeared on google.com even when I was logged in, but then it showed up when I was on google.ca and wasn't signed in. I guess it'll just be a random thing like moderation on Slashdot?