That might be true, but I have yet to find a compelling argument for it. Personally, I dislike reading at that size (> 18px), and every time I ran tests, the us

That might be true, but I have yet to find a compelling argument for it. Personally, I dislike reading at that size (> 18px), and every time I ran tests, the users were more inclined towards using a smaller font size, usually at around 14/16px. In the end, I suppose it's more about using a proper baseline, and making sure the grid hold up, when users feel compelled to enlarge the text size themselves. Opinion pieces: http://ia.net/blog/100e2r http://ia.net/blog/100e2r & http://www.smashingmagazine.com/2011/10/07/16-pixels-body-copy-anything-less-costly-mistake/ http://www.smashingmagazine.com/2011/10/07/16-pixels-body-co...