Apparently, several lawmakers have proposed a Federal anti-SLAPP lawsuit. This is a fabulous idea and long overdue.
I will say this is not a theoretical case for me. I have to walk softly here because I am still in litigation, but I am currently being sued for defamation by a major corporation over a review of their services I posted hear and at Yelp ( I won't name them but a quick search of my site for my being sued will get you there). The suit is pretty transparently aimed at suppressing criticism, and only because I have some independent resources have I been able to pay the legal bills so far and stick to my guns. Right or wrong has little to do with the suit -- I have every expectation of prevailing if this ever goes to trial, especially since the State of California just declared their product illegal in that state over many of the same issues I raised in my review. -- this is about making criticism of the company so expensive and scary that the average person won't attempt it.