No real surprise – as of September 2014, the Pew Research Center finds that Facebook remains by far the most popular social media site. But in terms of speed, Instagram is the fastest growing with Pinterest close behind. HelpsGood experimented with the fast growing Instagram social network for the USDA Forest Service with the Ad Council to see if Smokey Bear could boost the government agency’s visual presence. It worked. The majority of feedback and sentiment was positive and that wasn’t even with relying on Smokey selfies. Instagram is a great platform for your nonprofit to connect with young Millennials for your cause marketing and social good outreach efforts.