Hi, All! Some times ago I've started three digg-like projects (suggest4business.com, suggest4marketing.com, suggest4travel.com). I really believe that ideas of sites (digg-like interface for not only actual but useful information) is great. But project haven't critical mass of users for it. I have now a little bit of traffic (very very small - just 10-20 unique users), but it's not conversional traffic, these users are not registering on site I would really appriciate it if you would help me with market my project. Also, if you can show me my fails - do it Thanks!
Maybe try hiring some posters / diggers or making multiple accounts yourself. Or hold some type of contest. Make the users WANT to register.