James Frey lied about his own personal experience and Henry Blodget was involved in securities fraud. They are relatively unknown outside their industry.
Mike Daisey told lies that he presented to news organizations, blogs, etc. as facts -- for money and self-promotion at the expense of a well respected company. CNN, NYTimes, The Washington Post, etc. wrote articles based on Mike Daisey's lies. In my view this is similar to what happened to Dan Rather a few years ago. People will forget, but they will remember.