On Jul 27, 2007, at 2:19 PM, Jeffrey Barke wrote: > 2. Is there a difference between using pixels and ems for typography? > If not, what do people use and why? ems are relative, while pixels are absolute measurements. If you use ems then any viewer will be able to resize the font -- with pixels, IE users will _not_ be able to resize fonts. Thus, for usability reasons, it's generally considered better to use ems or % sizes.