Success Facebook и Twitter haunts other software creators. So, relatively recently, a project was launched Google+, which never became popular enough. Now the ubiquitous Microsoft.
However, the fact that the company from Richmond is developing in this direction became known back in the summer of this year, when the first information about the project appeared on the Web. Tulalip. And now it became known about the progress of work in this direction. The resource told about them The Verge.