How to get traffic to my site in particular? Its different from most sites.?

I know there are a lot of questions about getting website traffic, but for my site in particular its a bit different . . . mainly because its based off user-submitted content, and that it doesn't have actual articles to submit to any directories . . . I've already tried and failed at SEO, does anybody have any other tips for my site in particular? http://rosasecta.com I should note that my site has a unique point system that can reward refferals and such.