what is exactly trolling

Trolling is a mean way to post comments about someone on social media. Social media is the way to the connect with your friends and family but sometimes trolls have to comment on pictures or tweets that have hurt the other person. I really don't understand how a troll can satisfy their craving. What good does it do to your self esteem. There is no real answer to how and why it started but more teens see it as a trend. In my opinion I feel that trollers feel better because they don't have the courage to said anything mean to their face so they feel safer behind their screen. They should start to look out for trollers and find ways to prevent this trolling. Trolls should not have the rights to post rude comments on anyone tweet or picture. That is my view on trolling