The Wide Web Consortium (W3C) has developed standards for use in web site development.
XHTML and CSS - By using XHTML and CSS sites
How you benefit from using web standards
Easy to change your site design - cost-effective site maintenance
Drive more traffic to your web site - Better search engine responsiveness
Reach broader audience - accessible by screen readers and devices such as PDA's
Reduce the cost of developing and maintaining your web site (one design fits all
browsers, even ones that don't exist yet); quick and easy to change your
design because the look is separate from the content (demo on our site)
Increase the longevity of your web site - when new browsers or browser versions are
released, your site won't break
Minimize hosting costs by reducing bandwidth - standards-compliance sites contain much smaller files so you can reduce your data transfer volumes