I'm sorry to say this is nothing new. There are several programs which also just grab images from the internet. Just put a search in on google and you'll find literally dozens.
Here's one:
TGP PUMP
and another one
I think I read about the first one about 2 or 3 years ago. Some guy who lived in a trailer. He got tired of surfing through all the crappy porn sites and designed a browser which, like you say, simply showed the images minus the promotional material.
Of course, there is a simple solution to all this . . .
