Clips securely to the Kinect and then unfolds against the back of the TV. Seems very sturdy and doesn't wobble even while people are leaping about playing the games. Can't really fault the product, something you can fit once and forget about.
This fits nicely on my Panasonic Viera 42" Plasma (not sure which model but it's just over a year old).
The stand adjusts to a variety of TV thickness also.
It is very sturdy in place and the kinect clips on so shouldn't fall off easily by being knock accidentally.
The only way I think it could be improved is if the Kinect sat a bit lower to make it more subtle, as the sensor looks quite large on top of a TV. But that's me being picky so I'm not knocking off stars for that.