Siliconera spotted a couple of days ago that Sony has registered the trademark "PS Cloud". This doesn't have to mean anything, but it's possible that Sony is actively looking into cloud computing for games or other entertainment, similar to the OnLive console that was shown off at the Game Developers Conference last week.
What can Sony do with Cloud Computing? With permission from a squad of volunteers they could allow users to share demos and other downloadable content. An idealistic solution to the widely publicized PSN bandwidth fees problem. PlayStation 3 game hosting responsibilities could be split up or the PS Cloud could lead to a cloud console like On Live where games are stored and rendered on far away servers. The PSP already has remote play connectivity with the PS3. Looking (and dreaming) one step forward it would be awesome if Sony the PS Cloud was used to stream music, movies, and technologically impossible games to the PSP by just sending a video stream and transferring button input online.