Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “400;URL=/Default.aspx?refresh=true” for attribute “content” on element “meta”: Expected a space character, but saw “U” instead.
Element “input” is missing required attribute “alt”.
Duplicate ID “widget-home-caption”.
Bad element name “fb:like-box”: Code point “U+003A” is not allowed
Bad value “panel” for attribute “rel” on element “a”: The string “panel” is not a registered keyword.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The first occurrence of ID “widget-home-caption” was here.
Element name “fb:like-box” cannot be represented as XML 1.0.
This document appears to be written in Italian. Consider adding “lang="it"” (or variant) to the “html” start tag.
Italy IT