@timbray @dfltr you know who browses sans javascript? Googlebot, many accessibility #a11y tools, my BlackBerry. Why? Same reason I use Click-to-Flash to block Flash: performance and reliability. In other words, until your (site author's) javascript is #1 small enough to not hog bandwidth, #2 fast enough to not slow down my browsing experience, and #3 efficient enough to not peg my CPU(s), it doesn't deserve to load/run in my (nor anyone else's) browser. e.g. if your AJAX interactions take longer than a full page load (many top sites do), drop your AJAX; if your pages ever rainbow beachball, drop your javascript.