It makes me laugh sometimes when people talk about "too much power" given to the "power users" at Digg.

The only power that top users at Digg have is their skill at networking (i.e. making friends, being active, Digging often), their ability to recognize quality content, and the art of crafting a proper headline and description.

User-Moderators at powerful subreddits have the power of social media life or death. They can (and often do) destroy a submission with a click regardless of quality or effort.

Don't get me wrong - I still enjoy many aspects of Reddit over Digg, but that one major flaw is the a killer.