I see alot of good guys here with good opinions. Definiyly you should allow users to post their sites somewhere or somehow (that could keep them coming back). Why no social network linking? G+,facebook,twitter buttons or boxes .

This segment, but some basic SEO to find a good site that has been missing: the wrong title, no description tag, investors, traders, financial optimization onpage gurus, the same word should be a better image and so no ALT tags.