With regard to the lamenting of a lack of "report button" on this board, to alert MA of borderline or bona fide CP posts, I was just thinking something related-

Why not an "ignore" function? That way the site can maintain total free speech and if you don't want to look at a post you just click "ignore" and it disappears.

As for the CP, that's MA's job to root out and find himself you'd assume. Only he is on the hook if some RL Banhammer is in the offing.