AdSense Test For Slide/Scroll Ads

Google AdSense is running a test of a new ad feature that includes up and down buttons in the corner of ad units. Click the button, and more ads slide in. This way, if you love (love!) ads, but you just want more ads, you can order up a new side helping of ads. You know, because you can never have too many.
Here’s a screenshot of the implementation by Barry:

Original post by Nathan Weinberg