Social technology company 8th Bridge released its third-annual Social Commerce IQ report, which looks at nearly 900 online retail brands – including nearly all brands in the Internet Retailer 2013 Top 500 Guide – their social adoption and subsequent results. What it found was a close race in terms of social network adoption amongst Facebook, YouTube, Twitter, Instagram, Pinterest, Google+ and Vine; however, one network shined most in the area of referral traffic and perceived value: Facebook. But it's not organic traffic that's winning there, said 8th Bridge. This traffic was paid for via the Facebook Exchange, and top retailers are spending money to get it because they believe it's the most viable social advertising platform. Get the full story at Search Engine Watch