The "GeForce Experience" service is released in beta version and is limited to the first 10,000 users who register on a first-come, first-served basis.
Currently, GeForce Experience supports WIndows 8/7/Vista OS, 32 games on graphic cards that feature Kepler and Fermi GPUs.
When the "GeForce Experience" is installed, the software creates the UpdatusUser account. This account runs the NVIDIA Update service for updating drivers and application profiles through the NVIDIA server.
Nvidia says that the software does not collect any personally identifiable information, altough it collects data including hardware configuration, operating system, language, installed games, game settings, game usage, game performance, and current driver version. NVIDIA may also share aggregate-level data with 'select' partners, but does not share user level data.
For more information on the new NVIDIA initiative, visit http://www.geforce.com/drivers/geforce-experience