Small points:
1. The mouse over causes the page to jump up and down
2. There is an banner under the large sepia bear that only partially fills the interior of the blue bounding box
3. The point of this seems to be to really pull in folks with minimal knowledge of site creation (newbies) so it might be a good idea to explain why MPA3 cascading is such a benefit.
4. All in all I think it accomplishes the goal of easily explaining ways to market your group of sites.