To allow laymen the ability to make clear something that the press will or can not.
The current crisis-du-jour in the Bush administration is the phone call data that the NSA got from 3 major phone service providers. Note: Although the press is doing their damnedest to avoid explicitly making this point, no one here is claiming that any phone calls have been listened to.
However, here, Kim du Toit explains in perfect pitch just exactly what is going on here. Please read it.