More on the Sony dodgy DRM story:

The EULA also makes no reference to any “phone home” behavior, and Sony executives are claiming that the software never contacts Sony and that no information is communicated that could track user behavior. However, a user asserted in a comment on the previous post that they monitored the Sony CD Player network interactions and that it establishes a connection with Sony’s site and sends the site an ID associated with the CD.

…I doubt Sony is doing anything with the data, but with this type of connection their servers could record each time a copy-protected CD is played and the IP address of the computer playing it.