The Florida legal system can kiss my @ss, too. I don't live in Florida, I don't post from there, and in fact I've never set foot in that state.
Federal subpoenas are meaningless in cases where people post from outside the United States, too.
Welcome to the digital age of global communications.
Multiply the dismal odds of success by the limited assets of the people who would be sued, and you've got a case no lawyer would touch. Unless, that is, somebody were paying him to go ahead with the suit for other, nonmonetary reasons.