Well, according to http://www.w3c.org, I know nothing of the term “HTML”. Their validator blew up everything (Shey, thanks for this information). So I put up my home page there to validate…19 errors!
Then again here are some stats about other websites:
Google: 47 errors. (Redirects to co.jp for some reason)
MSN: 0 errors.
Sun: 8 errors.
Cisco: 186 errors.
Ebay: 243 errors.
Microsoft: 0 errors.
Adobe: 0 errors.
Does that mean that W3 Consortium is whack? Microsoft and Adobe seem to be on top of their game on the validation.
BTW: Check out this awesome post.