Fix your thoughts on what is true, and honorable, and right, and pure, and lovely and admirable. Think about things that are excellent and worthy of praise...--Phillipians 4:8
Once upon a time, communication was only by "word of mouth." In some places that may still be the case, but in most areas, the preferred method of communication has moved from hand-written letters to printed material to electronic communication, including social media and other online platforms that again enable word of mouth (or text) exchanges. Communication is fast and immediate, which sometimes makes determining the source and what is true more difficult.  
There are many ways to share the Gospel. Different generations listen for the Word through different vehicles. Churches today must reach out to all through every means possible. Remember, Jesus didn't wait for people to come to him. He went to them on their territory.
Social media -- particularly Facebook, Instagram, and Snapchat -- enable churches to connect with segments of their congregation and community regularly and quickly. But it's important to develop a policy to guide the use of social media in your context. Resource UMC can help. Here's a sampling of key articles.

Resource UMC is also a great place to find "how-to" information or sign up for online courses to learn specific skills or ways to reach more people. See what's available about connecting online. 

WPAUMC Social Media Guidelines

The WPAUMC Coordinating Cabinet, on July 1, 2020, adopted new guidelines for use of social media and other online platforms by clergy and lay leaders who represent the United Methodist Church in the Western PA Conference. See Guidelines for Social Media