Shopping can be one of the most social activities. Then again, I often shop alone. It really depends on what I am going for. On the more social side you have: asking friends what they think of a particular Victorinox rolly bag; reviewing ratings or reviews by strangers or friends; group buying which is really a form of crowd-buying - still quite social; finding endorsements from friends or 'strangers with expertise'; wish lists and registries; affiliate sales networks (e.g. Amazon); relevant recommendations (e.g. iTunes Genius function). As word of mouth is one of the most influential purchase drivers across many product categories, it only makes sense that we will all continue to push the intersection of social media and shopping...