One of the success stories of this business model is probably cyberduck (http://cyberduck.ch http://cyberduck.ch) I have heard from friends that the guy makes d

One of the success stories of this business model is probably cyberduck (http://cyberduck.ch http://cyberduck.ch) I have heard from friends that the guy makes decent money with his "donation"-business model. Though it's more like shareware than actually just placing a donation button on your website.