Nice to se the word "fun" go, because that sort of language shouldn't be used to describe lists, campaigns and the misery of html emails
2010 to 2011 seems like a massive jump!
This is a wonderful example of so many different evolutions in design. You can see UX becoming more apparent, as well as typography for UI, the relevance of hero images moving from 'tell them what we do' to 'show them what we do', logo design evolution too.
I just said 'wow' :) Had a lot fun seeing all design trends and language over the years.