<http://schema.org/description>
"One of the more notable knock-on effects of Facebook\u2019s deep integration with Spotify last September (besides making music more social) was that new users were required to have a Facebook ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2012/06/14/you-no-longer-need-a-facebook-account-to-sign-up-for-spotify-in-germany/>