mashable.com/2011/01/26/facebook-buy-with-friends/
trendwatching.com/trends/innovationinsanity/index.3.php
thenextweb.com/asia/2011/10/19/group-buying-is-huge-in-china-now-reaching-42-million-shoppers/
business2businessmarketing.blogspot.co.uk/2012/08/group-buying-for-business-advantages.html
mashable.com/2011/04/18/1band1brand/
theage.com.au/lifestyle/shopping/going-for-a-thon...roupbuying-site-caught-short-20111002-1l3sg.html
moneylife.in/article/are-online-group-buying-sites-going-the-way-of-the-dotcom-bubble/19810.html
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