on Just Publishing Advice:
The term, social proof definition originates from a 1984 book by Robert Cialdini titled, Influence. It is also sometimes called informational social influence.
It is a behavior that thinks other people have more knowledge about a situation.
Take a circumstance when someone is thinking about buying products or services. In today’s online society, it is now almost a natural reflex for potential customers to check for ratings and reviews.
There are many types apart from customer reviews. These can help you improve the performance of your blog or to help you sell more books.
Chris The Story Reading Ape's Blog 
Reblogged this on Rafferty and Llewellyn's Starter Library and commented:
Here’s an informative blog post from Derek Haines. Thanks, Derek.
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