<http://schema.org/headline>
"\u03A0\u03C1\u03C9\u03C4\u03CC\u03C4\u03C5\u03C0\u03B1 Facebook Avatars  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.otherside.gr/2011/02/prwtotypa-facebook-avatars/>