Sorry for the confusion, here's an extension of the idea;

A form of short term communication from the (Playonline Viewer?) that would require you to be logged in,
(Something like the message system, but for people who aren't added as friends, and don't need to be read from the menu, (would send to you like a /tell)
If abuse is expected, a setting to block off-game messages could be added. (Or just those thought to be spam)