How to make the most of the buzz-worthy photo-sharing social network One of Facebook’s smartest moves was its 2012 acquisition of photo-sharing service Instagram, which may soon eclipse Facebook in popularity. After debuting in 2010, Instagram grew by 23 percent in 2013. Facebook, meanwhile, grew only 3 percent.With its scrollable photo streams and cool photo filters that allow users to flex their creative muscles, Instagram is tailor-made for the era of sharing. And savvy companies and brands are using the network to connect with consumers on surprisingly visceral levels, through evocative imagery.Instagram recently corralled a collection of successful marketing campaigns in a softcover book, Instagram for Business, meant to inspire brands. And its sibling site, Business.Instagram.com, hosts many of its brand case studies. The releases underscore one immutable fact: There are several