Nice article on Smashing on making web content more readable. Make sure you’re giving your body content room to breathe. That content is the reason your website exists.
My one gripe is the font stacks that are presented. Why would Helvetica be placed as the fallback to Arial in the font stack and not the other way around? I stated my confusion with this on Twitter and Jonathan Stegall points out that this is the default font stack in Dreamweaver.