http://www.emptyspaceads.com/websites/preview_url?website%5B...

I thought that was really awesome, where do I sign up? It would be great if somewhere in those adds you had a "Sign up" or "embed the adds". It would then bring me to a page, where I give you my email, you give me the js to embed, and the whole transaction is done. (Other than a month later when you email me telling me you need my account info because you have $20 for me).