netmeg - 12:39 am on Jul 3, 2013 (gmt 0)
I don't use less than 16px on any of my personal sites. And a line height of 120% to 140%. And my sites do pretty well. If my pages weren't already too long, I'd probably take it up a notch, too.
It resizes just fine on smart phones and tablets, too. But my sites are responsive, so we can tweak it in the stylesheet.