i had a look at your landing page. there are lots of links on the page, but i couldn´t find a single one doing anything. as a user i don´t know what´s up. remove links that you dont use. the go for it button, does it anything?
the text in the center of the page is about your service and the first app in the contest. i´d split that up and try to make the texts as short and simple as possible. many people (including me) will leave the site without reading the text.
hope that helps, martin