"Checkpoints
Accessibility - check WCAG and Section 508 guidelines against many file types: find flashing GIFs, untagged PDFs
Broken Links - check for broken links and spelling errors
Compatibility - check for HTML, script and image formats that don't work in common browsers
Search Engine Optimization - check Google and Bing webmaster guidelines
Privacy - check for compliance with EU and US law
Web Standards - validate HTML and CSS
Usability - check against Usability.gov guidelines"