[Asrg] Spam profitability analysis and countermeasures

[Chris Lewis]

Matthias Leisi wrote:

> Further, given that botnets can be in the tens of thousands of members,
> it's easy for the botnet operator to initiate counter-attacks if the
> number, "click-rate" and aggregated bandwidth of spam-recipients does
> not outnumber the botnet operator's resources by an order of a magnitude.

We must _not_ forget the Blue Frog lesson:

http://en.wikipedia.org/wiki/Blue_Frog