A positive about social media is that you can easily find a person that you might have lost contact with. You might have a had a really good friend who moved away and then you find them and reconnect. It's good to keep relationships even ones from a long time ago. Social media can be the bridge that people can cross to reconnect. But a negative about social media is that once you put anything on your accounts it will always be around somewhere, even if you delete it. Everyone needs to be careful about what they post because once it's out there, there's no way to get it back. I always think before I post something, 'will it come back and haunt me in the future?' It might seem like you can do anything behind a computer screen but everything you do has an effect, so you always have to be careful.
I do think that social media can bring people together if everyone is respectful about other people's ideas. It can be positive if people don't bash other people because of what they post. Everyone can discuss what they find interesting and talk to others who have the same and even different view points. I also think that it can bring anyone together when people from all over the world have a chance to talk to each other without traveling long distances. It has made communication easier which everyone can appreciate, if it's used in a constructive way.