Some of the developers are currently listing in Apps Market as  way of advertising but it might be better to keep it for apps sales and UNA use their Ads mod (with html editor) for posting developers that are looking for custom work. It would be a simple deployment, easy for developers to list areas of interest, photos, video samples of their work and site owners to post help wanted adds for site development all in one place. Sort of like a the old bulletin board concept. At least a help wanted for site owners if nothing else.