Originally Posted by GoodGuy

The problem is that there is nothing he can do in terms of law. Unless the other person steal images, text or real pixels, then there is nothing to do. You have not a case. And if the person ever steal images or text, you will finish wasting more in lawyers than what you get for winning the case. You can't legally sue him in this case.

You can only "maybe" hurt his reputation by posting a drama on GFY. But, again, a lot of people will not agree that it is not a rip off, since he has not steal anything, just put the images and text in a similar position.