"As I said above, I don’t have the luxury of ethics at this stage."<p>Ethics is not a luxury. Properly defined and applied, what is ethical is what is needed to survive <i>as a human</i> (which means going by reason), <i>long term</i>. This is totally at odds with what spammers do, which is to defraud people, violate contracts, etc. Running or using a bot network is <i>trespass and theft</i>. In this context, everyone, including the spammer, knows where the botnet came from.<p>Yes, this guy might get <i>some</i> money, <i>for a while</i>, just like any other common criminal can (while constantly worrying about getting caught, long after the crime was committed). But compare that pathetic psychological state and the small, ephemeral trickle of income to what someone doing honest work can earn (a successful startup, for example), and you will see that the immoral <i>is</i> the impractical.