Loose lips: please think before discussing security policies
If you know any of the details about security profiling, please keep that information to yourself, even if you believe that it's common knowledge. I saw a post as recently as yesterday in which a FTer casually mentioned a criterion for security profiling. While I have no idea if the FTer was right or not, it seems to me that one of the ways that we can all contribute to the anti-terror effort is to use caution when discussing security-related information.
The terrormongers were able to do what they did in part because they understood the security system very well. FTers can make a difference, and one of the ways we can make a difference is by keeping security-related information to ourselves.