I wonder though, if the spammers would just start using stolen credit cards. In discussing this with coworkers, we're also concerned about the botnet issue.

If the *spammer* had to pay $2500 to send a million emails, I totally agree, that would stop all spam. But what I'm concerned with is that the spammers are sending their email from a hacked computer - from your grandmother's computer. Wont they just keep doing what they've always done, except tht now your grandmother gets a bill for 2500? Or alternately, they only have to steal one credit card per spam blast.

In an earlier post, I asked "who collects the charges" I've pretty much got that part figured out. (I'll share if anyone cares) But the part I don't have a solution to is botnets and stolen CCs.