and viruses and spyware and ..... It's been going through the minds of IT people for years

But the most stunning statistic, said Radicati, was the last: more than 10 percent of the respondents have purchased products advertised in spam.
That's the way to teach those spammers a lesson...make them some money.

http://informationweek.securitypipel...news/159905059

Another link

http://www.techworld.com/security/ne...fm?NewsID=3383

What the companies haven’t revealed is precisely how they calculated this startling 10 percent statistic, from what size of sample, and from what user constituency. Such detail will have to wait until the final report is made public, later in the month.

The statistic should, however, be taken in context. It could be taken to mean that over ten percent of users admit that at one time they have bought (or tried to buy) products advertised in spam. That does not mean that ten percent of product spam receives a sales enquiry, a highly implausible claim.