Errora on Habré?

Of course, I love Habr, but here I dabbled in OperaAC functions and found one: Are the web standards met? Interested, clicked. And he gives me:

Result: Failed validation, 62 Errors

and further list of errors ...
So where are the bugs in Habré or in my head?
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Here is the validator link: http://validator.w3.org/