I guess I'm confused. The title of your post makes it seem as though you are a forum for APIs, but the site makes it seem much more like a marketplace. Am I reading it wrong?
My take is that Hitch is there to help developers stay informed (via push vs pull) about changes to APIs they are interested in and then to provide a forum to discuss those changes. I think the "marketplace" piece (i.e. Browse APIs) is really just to facilitate the ability to find the API you want to "Follow" for changes.