Digg

From Wikipedia:

Digg is a community-based popularity website with an emphasis on technology and science articles. It combines social bookmarking, blogging, and syndication with a form of non-hierarchical, democratic editorial control. News stories and websites are submitted by users, and then promoted to the front page through a user-based ranking system. This differs from the hierarchical editorial system that many other news sites employ.

Digg's site:

[http://digg.com/]

What are some uses that could be incorporated into the library?