Jon Davis is working on a blogging DT app that looks like Outlook (think list of posts, preview pane). Meanwhile, John Ludwig would want to blog directly from Outlook (and it seems he got his partner Rich Tong to start a blog).

Data point: both are VCs at Ignition and former VPs at Microsoft. I remember seeing Rich on stage during a sales convention throw away a floppy disk to mock a flaw in Lotus Notes' security model (I think the floppy was the only way to recover lost passwords or something). At that time it seemed the whole company was bent on beating Notes with Exchange, which eventually more or less happened.