Used to work for attorneys and I saw a lot of bogus class action suits similar to this one. Excellent ruling by the appeals court. Those attorneys deserve a smackdown.
There is a cure for this - Loser Pays. The loser(s) in any lawsuit become liable for the defendants' legal fees, and if the plaintiffs cannot pay, then the plaintiffs' attorneys are liable, in fact, I think whether or not the plaintiffs can pay, the attorneys should be held liable and have to pay a substantial protion of the legal fees.