Terry, you’ve never looked more dapper.
This is Tumblr Pro, apparently. Click a link, watch a video and they’ll stick a dapper-looking top hat on your avatar. And they’ll let readers submit content to your blog, apparently. (Like comments on Flickr or Deviantart?)
I saw the link in the sidebar and my first reaction was “oh crap, they’re starting up a premium subscription service.” I hope they don’t. I like that most of Tumblr is free to use, and you don’t have to pay a monthly fee just to move things around on your page. I’d rather have ads in the sidebar than be forced to subscribe to something.
EDIT: Oh crap, I think it is a premium service. It’s bad enough Deviantart charges ten bucks just to rearrange your gallery profile…)