The Wall Street Journal (subscription required) has obtained a draft version of the SEC's report on bond-rating firms and their role in the credit bubble, and some of the stuff is pretty scary.

In one e-mail, a staffer at Standard & Poor's, which is own by McGraw-Hill (NYSE: MHP) told another that "we rate every deal," and that "it could be structured by cows and we would rate it."

Another wrote that "rating agencies continue to create" an "even bigger monster -- the CDO market. Let's hope we are all wealthy and retired by the time this house of cards falters. ;O)"

Yes -- complete with the smiley face. If this seems reminiscent of disgraced analyst Henry Blodget's e-mails bashing stocks he was publicly pumping during the dot-com bubble, that's because it's exactly the same. The lesson here, once again, is this: e-mails ever really get deleted permanently and, if you're being shady or doing something unethical, make a phone call, talk with the person in a dark alley, or send them a letter that they can promptly discard. Don't send an e-mail!

Of course, S&P's investment-grade ratings on CDOs stuffed with dodgy loans turned out to be wildly optimistic, and the house of cards has done more than falter -- it's brought down Bear Stearns and wreaked havoc on the economy.