> for Andreas it is the most important thing to point at mistakes of other people

As you sure know if you really follow my postings, in virtually all cases it's about factual mistakes, which I find important to challenge and correct. In virtually all cases, I totally ignore grammar or orthographic mistakes (knowing I happen to make plenty of them myself when communicating in a foreign language). There's one exception, though, that I certainly have a soft spot for and comment on once in a blue moon: (presumably inadvertently) entangling in multiple negations and ending up with the opposite of the envisaged statement.

> to laugh about them in public and jerk off.

Damn, seems I really forgot to tape off the webcam ;-)