You are using a service to access another service. In fact, you are using a service (internet isp)to access another service (xbl/psn) which allows you to access to your game service. So yeah, really. I think reading the ToS will explain it fully for you. [spoiler]You might be interested to know that at any time, Bungie or Activision can block, restrict, or cancel your access to their service. It's all in the ToS. [/spoiler]