This talk was rumored to have been cancelled at a vulnerable vendors (Adobe) request, but Jeremiah Grossman and Robert Hansen decided to do parts of the talk anyway. Here's my notes from the semi-restricted presentation.
My Analysis: It sounds like the exploit basically creates a frame that is hidden underneath the main content frame that a user is seeing. The main content could be a flash game or any sort of incentive to keep a user clicking. All of the clicks that the user is making are used to click on content in the hidden frame. Again, just my speculation based on the information provided by RSnake and Jeremiah above.