The question of today is: are Google guidelines the law? What are you supposed to do with it? Should you follow it? Should you make your own rule?

In my opinion, there's Google law, and then there's the real law, and they're not the same thing.

Also, from a Black Hat perspective, it's very easy to cross the line. Sometimes, you can be the best white hat we ever seen and still doing something forbidden because Google someday changed this rule and you didn't know. So you're still doing the same thing but Google changed a line and now you're a Black Hat.