A system and method are directed towards enabling a user to access a client service such as a client game program that interacts with an online service such as a multiplayer game. A client probe detects execution of the client service on a first client device, and sends an instant message with address...http://www.google.co.uk/patents/US8108515?utm_source=gb-gplus-sharePatent US8108515 - Enabling rent/buy redirection in invitation to an online service
