The Free Speech Coalition has been fighting for your right to do business for over ten years. The fact that you haven't been supporting them while their members spend money to protect your right to do business is reason enough to join now.
Try searching Google if you want to know what they do.
They are always working to kill anti-adult bills, they have had a lobbyist who works at the state and federal level, and they have worked with other important groups like the ACLU and ICANN on a variety of issues including opposing and contesting unconstitutional laws and the proposed .xxx extension.
This is not an organization that was formed to take your money over the 2257 rules. You'll have to check some other GFY threads for those.
If you don't like the fact that they published the opinion of a lawyer that told them you might not be protected if you don't join, then file a lawsuit against the government yourself.
Everyone wants the FSC to fight for them, but some of you don't want to pay a few hundred dollars?
You should all sign up for the future, but also to thank them for helping protect your business for the last ten years while you weren't a member.