28/06/2011
Google+, a social networking system by Google. The service integrated several of the company's existing services, such as Google Buzz and Picasa Web Albums. It was first introduced an invitation-only "field testing" phase.
Unlike other conventional social networks which are generally accessed through a single website, Google has described Google+ as a "social layer" consisting of not just a single site, but rather an overarching "layer" which covers many of its online properties.