I don't think it's cool. I think it's petty. I don't agree with much of the OP, but I think it's inappropriate to invade his personal life over it, even if he did expose way too much of his personal information on this forum.
This forum is for discussion and debating. If you don't like the debate, stay out. Contacting his employer just reeks of butthurt.
I agree! He should have to have 50 quality posts before being able to contact someone's employer.
But in all seriousness - You are completely right. That would be a ridiculous thing to do.