There will be a 30 day grace period for compliance with Flyertalk's new rules. The changes encompass more than just Signatures. These are not typical corporate boilerplate disclaimers, they are the rules which moderators will actively apply. Everyone should read them. It won't take long, only about 3,000 words:
http://www.flyertalk.com/help/rules.php
There is no need to Alert moderators to non-compliant Signatures until mid-May. At that point you may contact the Signature Review Team (link in the rules) or use the Alert button in the lower left corner of any post.