Paul O'B serves as a team leader on the SitePoint Forums, the largest web community devoted to building websites, and hosted under the SitePoint publisher umbrella. Paul joined the SitePoint community early in 2003 and has since posted about 10 posts every day. Through this admirable activity, he has helped designers, even experienced ones, to raise their knowledge of CSS. He is the co-author of the online CSS reference, published by SitePoint, and has written a book: The Ultimate CSS Reference, with Tommy Olsson.
You can follow his posts on SPF.