In fact, a National Center for Biotechnology Information at the US National Library of Medicine study discovered human attention spans dropped from 12 seconds in 2000 to 8 seconds in 2013. Social media has a big part in that as the majority of smartphone users check their devices at least 150 times a day. This means your content has to be fresh and exciting. Most celebrities with massive social audiences gained those followers by having their own unique content available on specific social media channels.