I can imagine this is useful if you want to sell digital goods, say an ebook or, cough, pictures, but don't want to or can't set up a shop, or use a payment pro

I can imagine this is useful if you want to sell digital goods, say an ebook or, cough, pictures, but don't want to or can't set up a shop, or use a payment processor. It looks like a simple and convenient solution, they handle all the payments and send you a check in the end. But oh boy this seems to be an invitation to money laundering. 3 2 1 and people are going to put up links, and buy them themselves with stolen credit cards.