You "know" it was Penny? But if it wasn't you want the 'isp'?

While I think having a post that just says, "You suck" is immature, I have to admit that on more than one occasion you indeed act like are not only 8 years old, but like you are intentionally being an inconsiderate jackass.

That being said, this is a forum -- just because someone calls you a dickhead doesn't mean that you should get their IP address/ISP -- that's why this is a "forum". If the person is going to get banned or reprimanded, it should be up the moderators, not by/given to you.