I think utilizing another method besides "votes" could help increase traction for more submissions. For example, if I could easily discover users who share my interests, I'd love to receive an update (RSS) whenever that user submitted, voted, commented, etc. on an article. Instead of receiving a stream of content that may not interest me (I therefore only scan the page), I would know the content I'm seeing is somehow pre-vetted (at a minimum, by the submitter).

Ironically, I've felt this way for a while and created a website to test this theory.