Kudos to IE7
Sean Lyndersay: We have invested a great deal of time in hardening IE7 across the board, and nowhere more seriously than in our RSS features. It is an ongoing process, however, and we deeply appreciate the efforts of those in the community who have developed additional security tests and allowed us to use them.
When the IE team screws up, it makes front page news everywhere. If life were fair, items like this one would get equal coverage.