Invalid link when searching "validator" on google

When tou search for "validator" on google, you get a broken link.

1) Go to http://www.google.com/
2) Search "validator"
3) Below the first result, there are severall links :
with vwo
Css
Tools
....
4) Click on with vwo, which links to http://validator.w3.org/check ,
which leads to an error :
Sorry! This document can not be checked.
  Warning
  Sorry, this type of URL scheme (undefined) is not supported by this
service. Please check that you entered the URL correctly.
etc.

Received on Tuesday, 26 February 2008 04:12:11 UTC