The group buying phenomenon (also called social buying) has taken the local advertising industry by storm. First launched by Groupon in November 2008, the world has seen the arrival of hundreds of players in the last 12 months. Venture capital money has been flowing freely in the space. Not to be outdone, Montreal is currently host to three group buy companies with five more launching in the next few weeks. Is the phenomenon a fad or is this a revolutionary new way to do local advertising?