What's that thing on the sidebar?

I have joined the BlogHer advertising network, which means I get a cut of their ads. So if you like what you read here semiregularly here at Overthink, tell a friend, click on the ad or better yet, tell a friend and BOTH OF YOU click on the ad. Else I will be forced to blather on about my sex life for the Google search results. And no one wants that. Cool?