Social media has become massively popular in recent years and for good reason. There are a lot of benefits to using social media. While not everybody will agree that it is a good thing and there are certainly some disadvantages to it on the whole it would be fair to say that the benefits outweigh the negatives. This is a big part of why social media has become so popular.
The main pro of social media is that it allows you to interact with far more people than you would otherwise be able to. This means that you can be exposed to a far wider array of opinions than you would otherwise be. In addition you will be able to share your opinion with a lot more people. These interactions have certainly made the world smaller since you can interact with people from anywhere. That being said most people do tend to limit who they interact with to people who have similar beliefs to them.