Probably someone has already commented on this. Nevertheless here is my take:

This site is growing, and I mean page-size wise.
Users of IE and Firefox will not notice this, since a progress bar is all that is seen as the page loads. Use Opera and you realise that the page weighs in close to 200 KB. That is the minimum size of every page on this site.
Probably all the users on this site are on a broadband link, which conceals the amount of "stuff" the site pushes into your PC everytime you view a page. But for folks on a dial up line, having to wait for a minute every time a link is clicked is a pain. And extremely irritating.
I am yet to fathom the real reason for this bloat. Since the pages look simple enough to be coded in under 50 KB. I think the direction being taken by MS is not correct. Keep the pages simple, avoid loading a huge javascript file (like this editor)  every time a review needs to be read. Most people rarely feel the childish urge to decorate their reviews with italics and bold and what not. You need to test the website with the connection used by more reviewers and then decide on the amount of bloat that is needed, or provide a low-fi version also.

Navigation is also a bother. You need to rethink the present procedure of finding a proper title under which to post a review. Like, I would have preferred to put this "review" of MS under the appropriate Websites link, but wonder which category this is supposed to go under. I am sure you wiseguys will come up with a plan to modify this.