Well..in my case if do anything significative ( and i cant promess i will always be free ) i dont want any payment mainly because i dont have paypal.
As for the proof.. erm.. lol maybe my blog or anything http://paperless.skarz.co.uk/place
If you need more just ask.
Its really badly coded but i think that it looks nicey.
Oh btw i can share that design ( if someone codes it decently ), you can sell it and everything as long as you give me credit for designing it.