Read Write Web published an interesting analysis of the business social networking market looking at the 3 main players in this field: LinkedIn, Facebook, and Xing. The gist of this article is that the most mature actor is Xing. Even if Xing is less known as LinkedIn and Facebook, it’s the only company that is public and therefore publishes results. And Xing has also a business model that works (not only based on ads but mainly suscription).

LinkedIn vs. Facebook, 6 Months Later - ReadWriteWeb via kwout