Can I pay with imaginary money?

People sell all sorts of weird things on e-bay. For example, one girl sold her virginity (can someone explain how that was not prostitution?). One person sold nothing. One guy wants to sell his imaginary friend. And he is getting bids and questions.

At one point I assumed if you were smart enough to turn on a computer and operate it you were smart enough to NOT bid on something like this. Apparently I am wrong...about 20 times. This reminds me of the "Pet Rock" fad...you know, where people would paint rocks and then sell them for ridiculous amounts of money? I would hope we would have gotten smarter by now. I guess it is safe to say we haven't. I am going to go get some advice from my inaginary lawyers and see if I can pay with Monopoly money...I imagine I can.