Looks like I am the only one who is actually READING the feature pages :D
The features listed on the "Extensibility" tab are the same as on the "Administration" tab - copy & paste rockz :D
Edit: All the icons are from iconexperience.com, right? They look pretty good on invisionpower.com - although I disliked them before.
Edit2: But I have to admit that I don´t like the handwritten font you use on some pages. It just doesn´t fit the overall clean style in my opinion.