Increased smartphone use has led to the introduction of many mobile-based social networks; some aim to connect people based on their location, others assist users in sharing their photos or help people find a new partner – but it never used to be that way. Myspace, Bebo and Orkut have enjoyed success, multi-million dollar valuations and unrivalled popularity in different countries around the world. Whilst they may have presences on mobile, none of them managed to leverage the boom in smartphone use to their advantage and have since languished as Facebook continues to innovate via its website and mobile applications. Google launched its long-awaited Google+ social network last week, unveiling a service that many had referred to as “Google Circles” after ReadWriteWeb’s editor Marshall Kirkpatrick’s revelation earlier in the year. The search giant not only launched an impressive new Web service, it also dropped a companion Android app to help those with early access interact with the service and their friends that had joined it. Get the full story at The Next Web