I think the site should have a special session for the newcomers. Posting, voting, creating content is not clear. Not everybody is a computer or Seemit expert. Everybody needs a start. If you want make the site successful, make it popular and easy to deal with.
I had to go around in many times to Google in order to find sonme help. I find Seemit very straight and unclear to get started. It's a feeling that probably many others newcomers should share.
I hope it will be *listen" by the webmaster of it.