The "Sugarpova" entries on her page I think are the ones done by someone else. They have an unnatural, corporate feel to them. But all the others feel like Maria. You can see Maria's unmistakable personality and sense of humor so often in the way her posts are written.
As for the video, I'm always up for seeing Maria attempt to dance, as awkward as it could be.
She was cute dancing with that guy at the Woz/Rory exho. And she showed a couple of moves in the behind the scenes video of her commerical with Novak.