I came to post about the same thing.It's the prize-survey popup that tells you that you are a winner of an ipad 2.
When you click to get rid of it another pop up opens and neither will close when you click the red X in the upper RH corner.
I've opened Windows task manager to get rid of it that way, and selecting "end task" for this aggressive pop up makes the whole browser crash.
So today I am just opening up other windows, but the pop up lurks there, open and annoying, in the list of open windows.
I have McAfee, and am on a new computer with the latest versions of windows, etc.
Can RTVW get rid of this one? The pop-ups should not be crashing your system!It makes me think they could be trying to give my system a virus. Ugh.