The number of users will rise . Fortunately nVidia has no much options to prevent "SLI hack" excet implementing more complicated hardware ID's chek in their own drivers. (That can be fooled). The physX "problem" with ATI hardware in the system is already solved and isn't problem anymore . And finaly: "Heck, if nVidia truely doesn't have any chipset plans for the future, why would they care?" - the answer is very simple and clear... because they (nVidia) love their own customers and want to fu*k them infinitely , instead of earning 5$ for SLI certificate on every single P45, X38, X48 board.