I get this error message from the HTML 5 validator at http://validator.nu/:
1. *Error*: Attribute sizes not allowed on element link<http://www.whatwg.org/specs/web-apps/current-work/#null>at this point. From line 9, column 5; to line 9, column 62 <http://validator.nu/#l9c62> itle>↩ *<link rel="icon" href="favicon.ico" sizes="16x16 32x32" />*↩ < Element-specific attributes for element link<http://www.whatwg.org/specs/web-apps/current-work/#null> :href <http://www.whatwg.org/specs/web-apps/current-work/#attr-link-href> rel <http://www.whatwg.org/specs/web-apps/current-work/#attr-link-rel> media<http://www.whatwg.org/specs/web-apps/current-work/#attr-link-media> hreflang<http://www.whatwg.org/specs/web-apps/current-work/#attr-link-hreflang> type <http://www.whatwg.org/specs/web-apps/current-work/#attr-link-type> sizes<http://www.whatwg.org/specs/web-apps/current-work/#attr-link-sizes>Also, the title<http://www.whatwg.org/specs/web-apps/current-work/#attr-link-title>attribute has special semantics on this element. -- Samuel Santos http://www.samaxes.com/
