I think Blackhat is abusing websites, web services and in general cloaking content. That’s what I would describe it as. When I was a software engineering (I used to be a senior web/application developer) I was never taught about these things. I was taught a lot about Unix and Operating Systems so I know how to remotely write to other servers and create eggdrops, and, to be honest, injecting SQL and code, XSS, abusing/taking over other mail sending systems etc.
It’s not rocket science. As for cloaking of content, that’s not hard. Here’s some pseudo code:
if (referrer=searchEngine){
showSpecialContent();
}
It really is as easy as that… Blackhat is no mystery, there’s not a lot of secret stuff, it’s all about finding niches and opportunities. Don’t do it, Google will catch you. You know their motto : “Don’t be evil” (moderately ironic)