Most of that is only a problem because of the underlying assumption that if it weren't true you'd sue the person saying it for defamation. Which really makes th

Most of that is only a problem because of the underlying assumption that if it weren't true you'd sue the person saying it for defamation. Which really makes the problem worse in the cases where you can't sue, because the poster is outside your jurisdiction, you can't identify the poster, lawyers cost too much, etc. If anyone can post anything without repercussions, who would believe it without solid evidence?