Well a few things for this guy to read upon before he does this to me, if he does...
1) Upon entering my forum you agree to the style terms and conditions, if he steals any part of it, he agrees a fee must be paid or we will contact the necessary authorities.
2) Copying posts/forums etc... will get this guy no where, his forum will fail and no one will visit it anyway.
Oh well. Ive lost my competitive nature when it comes to forums. I only care about what goes on at my forum. If someone wants to pathetically copy my forum then I suppose I cant stop them. I could send empty threats but it doesnt always work.
They wont have the same community of people. That is something you cannot copy.
Actually he's 21. Here knows it's illegal and he's well aware that he faces the reality that his site will get shut down if Forumotion gets wind of what he's doing. Which I have no doubt will happen since the three sites he's stolen from (that I'm aware of) are aware of the theft.
And since one is Serebii, which has hundreds of active members, the likelihood that it'll happen is almost a sure thing.