From the ZoneAlarm web site:
The security experts behind ZoneAlarm urge you to always patch your operating systems and browsers whenever an update is available. More importantly, take extra precautions to protect your PC for those times when a patch may not be available. That’s why we are offering you ZoneAlarm Anti-Spyware for FREE today (Nov 14, 2007), Patch Tuesday, only. Don’t miss out on this incredible opportunity to protect your PC and stay safe online!