<http://schema.org/description>
"The online advertising market grew 14.5 percent year-over-year to a market value of almost 21 billion euros, according to IAB Europe, which has just released the results of its sixth ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/eu/2012/05/30/europes-online-advertising-market-grows-to-21-billion-euros-now-accounts-for-20-of-total-spend-iab/>