I have applauded how social media affected how people behave, and in general, how they think. It's so amazing and sometimes scary because most of the time, people are on their phones. Probably, everyone has their reasons, and you would never know what could it be, but it has positively affected us. Even the older people who have known different social media sites, they have seen in different views. It's just what people are becoming due to social media.
The adverse effects that I could think of already are the spreading of news, whether it's good or bad. Now, there are a lot of people creating a fake story just to have some clicks on their site, creating reviews on their websites that are not true. It has become the competition of people to have the best spots so that people they would have money.
I think that's where it all boils down. Right now, we know that there are a lot of corporations holding different YouTube channels for profit and it's the people who have the most money could be the ones to sit on top. Social media has really changed.
So I will end this by saying, subscribe to PewDiePie.