I can tell you why social media is very dangerous for a Christian who doubts their salvation or who are struggling with it. If you post a comment that you don't have a full knowledge of and you are proven wrong you can potentially suffer with paranoia. Some Christians think that if they have the Holy spirit they can't be wrong. Another is that if you live by the praises of people when you then get criticised you can get discouraged. You do NEED the armour of God before you go to the world and even in Christian circles. The bible says our ministers are elected so that we will not be toss to and fro by every wind of doctrine. The church isn't perfect and you do need to work on your salvation personally as well.