Most anticipate 2011 to be the year of Group buying. Just as location-based services took off last year, it seems that local daily deal websites have become all the rage. With a multitude of websites carving out their own niche against the two major competitors, it is going to be interesting to see what evolves in the space. After some reflection on my own experiences purchasing Groupon and LivingSocial offers I have determined four major opportunities for entrants to group buying. What opportunities do you see in the space?