<i>it was all web designer input and there was none regarding the actual concept, business model or use of the application</i><p>That's not because the users of this site are web designers. Mostly they're developers. It was because the design of the site was so bad that most visitors got held up there. This also explains the low sign-up rate, which you explain as a property of the audience. I think it is more likely a property of the site.