Biggsmash.com - Digg for Pictures & Photos (?)

Biggsmash seems to pull stories from Digg's news feed and search out pictures from stories that have words like picture, movie, photo and/or video in the title or content. I say "seems" because there is absolutely no explanation of the site purpose or function. It looks and feels like Digg, with Digg ratings for each article, but no other information is given. There was also no other clear pattern to the stories. So, it might have other search algorithms or purpose, but i'm just not sure. I do know that if you Digg a story linked here, it sends you back to the Digg homepage and the search bar is through Digg. So i guess the unique function is the ability to find photos and videos within news stories, but that is the best i can figure out.

"All content on this site is from digg.com, retrieved using the digg api.
Digg hosts user-posted content which, unless source quoted, is licensed under a Creative Commons Public Domain License.
DIGG, DIGG IT, DUGG, DIGG THIS, Digg graphics, logos, designs, page headers, button icons, scripts, and other service names are the trademarks of Digg Inc. "

Apparently, Digg has yet to have a good search function for photos and some of their spinoff sites like this one can better serve that function. And, again, there may be more purpose to this site and I just couldn't unravel it.

What is the purpose of this site? Is it just meant to Digg stories related to photos, pictures, and/or videos? I just don't get why there is no explanation of the site.
Do they contract out with Digg to use their material and format? How do they make a profit?