I missed this last week, but apparently the Huffington Post has launched a Digg/Reddit style section on their site called Huffit. 

Basically, the Huffington Post is automatically ingesting RSS feeds from pre-identified blogs (including themselves) and then giving registered users the ability to vote on their favorite stories.  The stories with the most votes will appear in the Huffit homepage.  Users can also submit stories from random blogs not of the Huffington Post's list. 

I'm sort of conflicted here.  Part of me gets annoyed when I see things that are so clearly derivative.  But at the same time, the power of Digg/Reddit is in their respective communities more than in their technology.  So if the Huffington Post is able to borrow the concept and create their own vibrant community, more power to them.