Tangentially related: Smashing Magazine recently did an outstanding article on readable web typography. (See http://www.smashingmagazine.com/2012/05/02/applyin

Tangentially related: Smashing Magazine recently did an outstanding article on readable web typography. (See http://www.smashingmagazine.com/2012/05/02/applying-macrotypography-for-readable-web-page/ http://www.smashingmagazine.com/2012/05/02/applying-macrotyp...). They say 8-12 words per line is ideal, though their example exercise seems to average closer to 15.