Katie needed something edited so I got out a pen and started reading. And when I needed to verify a certain grammatical rule I pulled out the old Chicago Manual of Style...and spent the next 30 minutes reading it like a novel. Because what the real party girls do on a Thursday night is read up on the proper use of a comma in a compound sentence. (Conclusion: historically, yes. But used more so now only if it is needed to clear up ambiguities.)
While we're on the subject, I'd like to go on the record as stating I am for the Oxford, or serial, comma, even though it is going the way of Pluto. I think it helps in clarification, continuity, and aesthetics.
And now I'm going to go put on a muumuu and find myself a few cats because I'm going to be alone for the rest of my life if I keep talking about commas.