Going through my daily subscribed feeds, I've notice both the monitors were displaying two ebooks, published to the web differently. On the left, is the The Feynman Lectures, and the right, Learn Web Development: The Ruby on Rails Tutorial. Both are rendered using Georgia font but at different size and layout.
If you ask me, I'll prefer the left screenshot. Straight-forward, clean, good contrast, and make the best use of the layout. Good example of a good hypertext document in the Web.