I'm writing this tonight because I was so excited to see that Blacktree has finally put a shell on their documentation that's worthy of the pearl beneath. Someone over there redesigned their wiki, and it's a beaut! You can actually find things in logical places now, for example. The wiki keeps a running list of the pages you've visited, in a little dhtml shade thingy on the side. They finally explain that some of the pages are "private"! And most importantly, they've updated a whole slew of pages, added some new "how-to's", and expanded their list of Quicksilver tutorials out on the web.
Definitely pay a visit if you haven't been there lately... You'll enjoy it!