Yup. However, your better off trying your luck in xlink kai (There's a growing Black Ops community over there) . Xbslink is good but it's a lil hard to locate a community of players.
Do note that xlink kai do have its kinks. (Random DCs, unable to locate hosts/users, engine crashes, servers being overloaded thanks to monster hunter psp players, etc)
But since we have no PSN (till 1 month later? Depending on scene's development), we'll just have to make do with these 2 alternatives.