1. What on page tools for validation and health are you using? 2. My site is 98% wrong according to SE*WebsiteAUdit3r but my coder says that html validation means nothing to SEO I quote from him :- The errors from HTML validation can be fixed but in my personal opinion, they are ALL irrelevant to us. I dont think SEO is affected by HTML validation. The pages with valid HTML/CSS are preferred over invalid ones but that does not affect the ranking of the whole site. 100% compatible and error free pages would benefit you in the long run but its more effort. And the effort is better utilized in finding the right keywords and putting up more content. Is the validation more important to you than SEO in terms of keywords? If yes, I can get it done but I can not loose all disallowed constructs from the current HTML version so I might have to change the DOCTYPE header to something that allows more constructs. Thoughts?