trsix,
wgy has no means in place to block another player. It has been suggested numerous times, and I do not think I have once seen any feedback from them on whether it would be considered or not.
Too bad, as it could prevent a lot of quitters threads and such..... Properly implemented, a user should have access to controls that block individual players from game menus, forums, and on their wall. Could you imagine how pleasant it would be around here if everyone were in control of who they see and do not see.....