A lot churches shy away from social media platforms for the reason of the corruption within each platform. While there is plenty of ungodly content on each platform, there is just as much opportunity to reach the lost there too. Jesus crossed many different culture barriers, He dined with sinners, He healed people from pagan lands, He called out the heretical religious leaders of His day - He went where people needed Him. Social media is where people are now-a-days. Christ followers can meet them there. We have to be careful not to become keyboard warriors, bashing others and ridiculing them, but to use social media as an opportunity to show love, share Christ and the Gospel, and to get involved in the community(most local communities have their own SM pages). Imagine using SM to help solidify Acts 1:8 in your own personal life - that you can be a witness TO THE ENDS OF THE EARTH, right in your office. This doesn't mean churches and Christ followers stop physical interaction with people, but that we take advantage of the newest opportunities for the sake of the sharing the Gospel.