Problems with the socially driven news sites [authoritative sources]

Here's a link to a brief commentary on problems with socially driven news sites (ala the digg effect). Hmmm, now we're moving on to the "authoritative sources" debate. Another fundamental concept from the library science field that has yet to be widely embraced by the socially driven sites. That said, sites like eBay and Epinions do offer ways of establishing your 'net cred, but not all sites do. I think that the social news sites need to borrow from the ebay model and build this feature this into their systems.