Ajax, Ajax Everywhere
How Ajax changes everything from Powazek:
"Stop thinking about the web in terms of pages that go from a server to a browser, and instead think of pages as collections of chunks that can each go to and from a server as needed. In many ways, it reminds me of the revolutionarily simple lesson from blogs: When you think of the web as posts instead of pages, important things happen. In the same way, thinking of the web as dynamic portions of pages opens up all sorts of user interface opportunities."