Supposedly, it's an anti-piracy measure. I seriously doubt it works, but I think that's why SmithMicro started it.

I suspect Bondware likes it because they want to integrate the RMP into Poser. I buy plenty at the RMP, but I sure don't want to do through Poser. I really hate the un-deletable Purchases runtime. And gawd, remember the disaster that was Cornucopia3D and Vue?

The issue for me isn't so much privacy, it's that if for some reason you are not connected to the Internet, Poser stops working.