Hence the being careful about his definition of 'clone'. If he copies the way everything is layed out, functionality and key appearance factors, then he can be in trouble.
There are key concepts/design aspects that took a long time to develop and perfect, and are still being perfected that are unique to the site. No one wants to see those concepts all be copied/stolen from a site they have spent a lot of time and money developing. I am also pretty sure there are some legal issues involved depending on the extent of this 'theft'.
He can make a site that monitors games, and your right, I do not own rights to that, that is why I have competitors in the market.
Evidence? Whois information, Site admin's name is 'Wojjie' (check the forums), my name here is Wojjie. (not a coincidence)