Google Plus is currently only usable by selected users on a field trial basis. During this invite-only stage, Google+ has four components: +Circles, +Hangouts, +Mobile and +Sparks.
This is different from the +1 button that was introduced in March, 2011.
+Circles: share what matters, with the people who matter most
Not all relationships are created equal. So in life we share one thing with college buddies, another with parents, and almost nothing with our boss.
Google is trying to provide more privacy control.
+Hangouts- multi-user video chat system
+Mobile- Always-on geotagging and instant cloud uploading and caching to content sent from your mobile device
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
Known for identifying cutting edge technologies, he is currently a Co-Founder of a startup and fundraiser for high potential early-stage companies. He is the Head of Research for Allocations for deep technology investments and an Angel Investor at Space Angels.
A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.