Good Questions about RatherGate

Jefferey Blanco (Louisiana Conservative) asks:

When did CBS register as a 527? [My answer: At the same time as CNN and Error America.]

(Citing a New York Observer article with the headline "Dan Rather To Bush: ‘Answer The Questions’ ") And what is the question that Bush is supposed to answer? [My answer: When did you stop cheating on your income tax?]

What is Dan Rather trying to prove and what's the point of the documents to begin with? [My answer: Rather was just making sure that bloggers hadn't fallen asleep in their jammies.]