There is a recourse--the legal system. A web site can't act as prosecutor, judge, and jury all rolled up into one! Even if this interpretation holds, if a web site accused someone of hacking, they would still have to persuade a prosecutor to pursue that person, and that prosecutor would have to get an indictment, go to trial, and win a unanimous conviction from a jury. The courts are clogged already! How often is that going to happen?