I agree that sexual abuse is a disgusting act and people that do it should be punished and/or get professional help (if it's due to a mental illness of some sort) - I also feel the same way about people that look at child pornography, however... you are still missing the point.
mIRC is a chat client that connects to IRC (IRC is what hosts the "chat rooms" you speak of), mIRC does not host the channels (rooms).
The only thing khaled could possibly do to help combat this is:
1. Don't allow people to join channels with certain words in the name, also not allow people to download files with certain words in the name.
Or
2. Log everything everyone does and send it back to himself and/or the FBI to see who is doing what.
There is an obvious problem in both of these "solutions":
1. People can simply call their channel something like "#chat", rather than "#childporn", same with their files.
2. Violation of privacy, a lot of people (including myself) wouldn't use a chat client that "spies" on you (of course that's if you knew it was spying).
Of course they could also just use a different irc client.
Khaled cannot do anything to stop these people, his client connects to IRC, it doesn't and cannot control what goes on in it.
