Newsflash.. this is not Digg! Paul... can we please get a "bury" or "spam" feature. Say... 5 people bury something and the link is deleted.
The key is keeping unrelated/spamish articles off the main page, but preventing users from downvoting controversial articles.
How about a "possible spam" folder, kind of a counterpart to "best", like a purgatory where stories go but can still be seen, and can make it back out if actually useful?