The statement could be pushed over to just about any true Web 2.0 site where voting and popularity determine the success of a piece of content. Facebook, Twitter, and MySpace – overrun by spam. Mixx, Propeller, Yahoobuzz – spam havens.
For social news powerhouses Digg, Reddit, and StumbleUpon to be so changed by the presence of gobs and gobs of spam hits a little harder. They are the sites where I started my journey in Web 2.0. They are the shiny beacons of user-controlled, traffic-generating goodness that made mainstream media look to the people for their opinions and discoveries.
They are, for all intents and purposes, shells of what they should be, and spam is to blame. Perhaps more importantly, how they handled spam over the years has caused them to close their networks in one way or another through a series of witchhuntesque spam countermeasures.