An anonymous reader writes: Researchers at Berkeley and UC, San Diego have undertaken a project to measure the response rate for spam, thereby also the income spammers might receive. They first sent 350 million messages through a hijacked part of the Storm net with an advert carefully crafted to imitate that of authentic spammers. Only 28 people bought their penis enlargement pills, for a response rate of 0.00001%. In total 469m spam emails were sent. Does this rhyme with the luxury houses and cars of those convicted for spam?