Found this interesting and debatable article on Sitepoint: “We’ve published an article on the way in which fonts are used on the Web. We found that a large “x-height” (the height of a lowercase ‘x’ in relation to the total height of the font) makes fonts more readable on a computer screen, as does a wide “punch width” (the width of the hole inside letters such as ‘o’ and ‘b’). Helvetica is a good font to use online. The designer’s choice of fonts is usually limited by the user’s OS, but techniques such as SIFr (example) are allowing Web designers to provide their own fonts.”