Did you notice little arrows on your site's Google Adsense ads? That's because Google just launched that new function that allows users to scroll or page through ads within the widget. Personally, the little arrows look like code errors to me. I thought I had left an extra < > or something somewhere in the code. But then I realized it was within the widget itself, so it had to come from Google.
So, if you are near any Google ads while you read this post, give it a whirl and see what the ads look like. Apparently the goal is to have people scroll through them for more relevant advertising.
I'm not really sure how many people actually want to scroll through text ads for fun, but you never know.