I had heard of her before, but only because I've watched the Safari videos from Apple's WWDC. This is the only place I've encountered her online, and if you're going to call yourself an "evangelist", then I should be seeing you more often than once a year. Compare that with Google Chrome's Developer Relations people - I see their posts online all the time, plus a ton of articles by them, plus they hold office hours on Google+ all the time. <i>That's</i> how to be an evangelist.