Roll-through technology is when as you rollover something, it takes you through to another page. Like a “click-through” but a “roll-through”.
This is inherently patentable technology as the prior art points away from it being successful. Nobody in their right mind would expect this interface fiasco to be useful.
But, done with the right message, it is quite a plausible means of advertising. Picture an ad for a vacuum cleaner or a magnetic personality or a black hole, etc. Match the message to the technology and you have relevance.