By Starbucks Mafia: Well mIRC is developed in Britain so the FBI have no authority over it whatsoever.

Quite correct, and something that newpapers and some websites need to learn. The FBI is like any national crime authority in that they only have jurisdiction in their home nation, despite the fantasy world some journalists live in where the FBI seem to be able to do whatever they like.

That said, I am with all sentiment here and believe that mIRC doesn't and won't ever contain backdoors or spyware or any other weird things that the end user won't know about until it's too late. If it ever did I would be the first such user to delete it and get something else or if that idea was fruitless I'd go without the power of scripting and just write a simple client myself.