Post things you want to see. Upvote and comment on other people's posts that you like, to encourage them to post more. When you come across an interesting comment you like, post that link to your friends.
A site like this can exist on interesting submissions for a little while, but community is what will give it staying power, and help it collect interesting submissions for a long time to come.
A site like this can exist on interesting submissions for a little while, but community is what will give it staying power, and help it collect interesting submissions for a long time to come.