Channelx99, a poster on the overclock.net forums, says that the Razer Naga gaming mouse comes with special drivers that require your computer to be connected to the Internet at all times in order to play -- and this means that the mouse was useless when it was first plugged in, because Razer's servers were down. Parsing the Razer license agreement, Channelx99 finds that Razer reserves the right to spy on all your activity and to sell or data-mine that data.
This is what happens when you keep pirates mouses! This is the weirdest DRM I've ever seen. Apparently it causes the mouse to be sluggish and lag too. And to top it off, spyware! Wow.