If there's a blog out there that I most tend to agree with, it's probably The Carpetbagger Report.
But not always. In a discussion of the prospect of Sen. Schumer forcing Karl Rove to testify about the Gonzales Eight, today's entry says,
Call it a hunch, but if Rove is called to testify, and he hires counsel to help him through his testimony, his lawyer will strongly urge Rove to tell the truth. If he’s unclear about that, Rove can always call his buddy Scooter about the consequences.
My hunch is that his lawyer tells him to take the Fifth.