Without more info about the network itself one can only assume. However the chances are pretty good that it is being monitored, especially if there is a good firewall in place. I would say it's safe to assume that the websites that are used most commonly for non work related things will soon be blocked. However, they may have just been taking an inventory check. As Patio said, it's a safe assumption that they were "watching" you guys before they took that info. Maybe now they want to narrow it down a little.