An old friend, Michael McDaniel, apparently is one of a small team of people behind MSN's mysterious start.com prototypes.
At start.com/1, you'll find an RSS reader that looks a little like My Yahoo or CNet's Newsburst. At start.com/2, it appears to be more of a bookmark service with some inline content. Both are in early development and work better in IE.
It'll be fun to see where MSN goes with this.
Michael McDaniel was at Amazon.com for many years. I worked with him closely in Amazon's personalization group.