The document discusses the rise of user-generated content and its impact on the media landscape. It notes that user-generated content sites will earn $4.3 billion in advertising revenues in the US in 2011, up from $1 billion in 2007. Worldwide revenues from advertising on user-generated content sites will rise to $8.2 billion in 2011 from $1.6 billion in 2007. The number of users and creators of user-generated content is also growing significantly both in the US and worldwide according to the report.