Social networks

Google+ Linux Community

Google has announced the opening of the Google+ Communities, the new section of the Mountain View company’s social network equivalent to the Facebook groups where people can meet to discuss a common interest.

Facebook founder Mark Zuckerberg announced that his social network has reached one billion users. About 600 million of those users connect through mobile devices. This milestone was actually reached on September 14 but Zuckerberg has revealed it only yesterday in an interview with “The Today Show” and the magazine Bloomberg Businessweek.

Yesterday, Facebook’s shares for the first time fell below $20. Their value at the the social network’s IPO on May 17 was $38, this means that in just over two months it has almost halved.

For over a week Microsoft was rumored to be acquiring Yammer and yesterday the official announcement of the agreement arrived. The company founded by Bill Gates will pay $1.2 billion in cash, twice Yammer’s estimated value.