Pull quotes help draw attention to the most important part of the text.
People do not read web pages word by word, they scan the text. It’s important to keep the reader interested.
One of the technics employed by magazines is using pull quotes, small snippets of the article enlarged or set in a different type. Pull [...]

No matter if you choose www or non-www. Just make up your mind. After that use a 301 redirect or rewrite so that search engines do not think they see 2 separate pages.
See workboxers.com for code example.

A great reminder and reference sheet, listing all selectors (as of CSS 2.1) and properties.
mod_rewrite Cheat Sheet