<http://schema.org/topics>
"acquisition,Android,Browser Lists,Business,features,Google,google buzz,google chrome,Google Lists,Google TV,Lists,Media,mobile devices,Mobile Lists,Social Media,Tech,web,web 2.0"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/09/04/google-happy-birthday-13-years/>