As feebs said, Blizz can ban you for ANYTHING, should they feel the need to do so. Their EULA and ToS all state that they reserve the right to do so. So yes, Blizz could ban you for being a member of this site. They could ban you for having this site open as a webpage while you play WoW if they wanted. The likelihood of them doing so? Slim, I would guess. But who knows?
edit: That site looks like cool
http://www.weaponscombat.com/