html validation

[harry]

Webmasters ! how many of you do your html validation ? if not, why ? does it affect ranking

[Peter]

No one knows if validation makes a direct difference in the SERPS, but I think it will helps indirectly. Valid code helps to make sure that users have a good experience on your site, which will improve your site's chances of getting links.

[kev woodman]

Alway always always. Surely the case for validation has been made over and over again? An effect on SERPS shouldn't really come into it - if you're a Web designer or developer and you're in any way professional you should be coding to standards and meeting accessibility guidelines unless you have a really really good reason not to.