DC talk show host and fellow South Carolinian Michael Graham has stated that Dan Rather et al are sunk because they have become something that nobody can recover from: a punch line. When your stock and trade is being a trusted purveyor of fact, and you breach the trust of your audience to the point that they laugh at you, what hope is there for recovering your credibility?
The latest exapmle is a link I found on Glenn Beck's website. The link is to a parody of the discovery of a 1973 email from Jerry Killian's Yahoo account. It is hillarious and at the same time delightfully damning to Dan and the gang at Can't Believe Snews.