I found what you all were waiting for, proof! Well here it is, black and white, pixel on screen, the donation model has been adopted before. Thanks to Joe who sent me this link and here a quote:
Radiohead is offering the entire album in through their website and fans can pay whatever amount they want to digitally download it. This donation-style system is significant because of Radiohead’s reputation and the size of their fanbase, which easily reaches into the millions globally.
So to all the Cattos and Captops out there, who feel humoured my my advice and net-knowledge, read that link and make up your own mind!
And since people will know that this site only makes money via donations they will treat it differently and come back, i.e. I enhanced my traffic because of my business model!