"Tanta" who cowrote the blog with "CR" sadly passed away a few years ago. She knew more about mortgage backed securities than probabaly everyone at the SEC and the Fed combined. One of her blog entries, "The Ubernerds Guide to Mortgage Securitization" was footnoted in a paper from the Federal Reserve.

CalculatedRisk was a pleasure to read. She and CR were not super bears. They were measured, cautious and thoughtful -- reason to be ignored when everyone else is making money.