Not sure if it would be wise for me to post here since it is a public forum, but if you think about it there are a few ways to get around the tracking of IP addresses (and i am not meaning VPNs)
I can see this causing issues for businesses who have poor workstation management. Program restriction group policies are going to be very handy in the future (http://technet.microsoft.com/en-us/library/bb457006.aspx)