Normally is user generated content, the fuel of web 2.0 applications, for all others for free. In Germany started these days a new portal from the GD-Verlag from Berlin, which works a different way: you have to pay for the content. On Xinxii you can download documents of all kinds of topics if you pay for it. But whoever wants to offer content can use the platform without paying for the service to distribute his or her documents.
I’m excited how this business model will work in the future.