I noticed activity from an updater I've not seen before and checked. Seems the Nvidea drivers installation 270.61 installs a new user called updatususer on Windows and then seems to gather some data about your system.

Quote"What data is sent to NVIDIA?

NVIDIA Update does not collect any personally identifiable information. The scan collects data necessary to recommend the correct driver update such as graphics hardware, operating system, language, and current driver version."

It also seems to use the Parental controls in Win7 to protect itself and also protects the nvidea driver folder in WinXP. Do I trust them? I think not. Needless to say it was uninstalled and the user folder deleted.

It also seems you have to opt out of this so worth checking.