The biggest difference in "following" on Google Plus and other social networks (primarily Facebook), is the Google Plus Circles feature. If you place someone in your "Following" circle, you are signifying that you would like their posts and activity to show in your news stream/feed, but you don't actually know them.
You can obtain a Gmail address from a Google Plus ID, by following the accompanying link.
When you +1 an article, for example, you are giving it a recommendation similar to a Facebook "like", but through Google+
You can obtain someone's Gmail address from a Google Plus reply link by simply following the link to his profile.
Google Plus Google equals a social network (Google Plus) and search engine (Google).
They crave attention
You can use google plus when you are 16.
Comments critical of Google Plus are censored, and everything posted on Google is also posted on Google Plus.
See the related links for a link to Google Plus.
You can get out of community easily. Google plus is the social network of the Google community. It has circles and communities.
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Google Plus is available in Australia - open to the public.
There are millions of websites that are connected to Google Plus. Most blogs have a Google Plus button. Sites like Pinterest are also connected.