Finally: good advice from MS on how to build your AJAX pages
Well, it's true that i still haven't seen everything, but this must be the first time I see MS officialy state that UpdatePanels aren't really that good when you want to build a slick efficient AJAX page. if you still think i'm wrong when i say that you should only use UpdatePanels if you're lazy or if you don't have the time to "rebuild" your page, the watch this.