[toomuchtodo]

Google+ doesn't need to exist to beat Facebook; Facebook simply needs to fall out of favor, which appears to be happening:

http://www.forbes.com/sites/parmyolson/2015/01/27/facebook-a...

http://www.pewinternet.org/2015/01/09/social-media-update-20...

http://www.theguardian.com/technology/2013/nov/10/teenagers-...