Providing secure avatar2avatar communications between platforms, first between SL and OS, then HiFi, Unity3d and Decentraland. We will be presenting the GridFone, the first secure, avatar to avatar (A2A) communications service between multiple platforms in VR/AR/VW as well as with real life. The flaws of the walled garden business model that conflict with principles of network effects will be discussed and how the GridFone will tear down the walls between worlds.