For the sixth annual time, Social Media Day was celebrated by thousands of people around the world on June 30.
Mashable started Social Media Day in 2010 as a way to reflect and honor the growth of social media and the digital revolution. Now in 2015, this holiday encompasses hundreds of in-person events around the world, along with thousands of tweets, Instagram photos and Facebook posts commemorating #SMDay.
See also: Happy Social Media Day 2015!
Source: Mashable Social Media