What Is Social Commerce?
In this article, social commerce is defined as the ability to make a product purchase from a third-party company within the native social media experience.
For example, you can browse and compare products on Facebook and then make the purchase on Facebook itself vs. going to the company’s site to make the purchase. Or you can learn about a product in a tweet and make the purchase on Twitter itself.
Right now, there are three social media sites that are owning the social commerce space: Facebook, Twitter and Pinterest.
Via Brian Yanish - MarketingHits.com