I think he mentioned 50-80 as the ideal measure. Here's one source that's pretty close in agreement (45-75, with 66 as an ideal): http://www.webtypography.net/

I think he mentioned 50-80 as the ideal measure. Here's one source that's pretty close in agreement (45-75, with 66 as an ideal): http://www.webtypography.net/Rhythm_and_Proportion/Horizontal_Motion/2.1.2/ http://www.webtypography.net/Rhythm_and_Proportion/Horizonta...