Words cannot express how infuriating that widget is. It's like Snap.com only more evil. Banish it back to the nether regions from whence it came and submit this post again so I can actually read it.
UPDATE: Seriously, I can't get rid of it. Clicking inside it, clicking outside it, the Escape key, nasty words about its mother -- nothing works. I even tried following one of its links, and the resulting page had the same obscuring widget on it. Who designs the UI for these things?
I'll try restarting Safari.
FURTHER UPDATE: Nope, it's out of excuses. That is officially the suckiest non-musical widget I've ever seen.