Nothing stings like betrayal, which is why Firefox users are furious with Mozilla after a controversial update to the developer's Terms of Use last week. Mozilla is scrambling to smooth things over, but the damage may already be done for many former fans of Firefox.Last Wednesday, Mozilla released a "Terms of Use" document for Firefox, a first for the open-source browser. That might sound like business as usual, but the Terms of Use include a concerning section that appears to give Mozilla broad...