Social media and other addictive Internet sites - people are constantly glued to them, even on their work, which decreases their productivity. Social media also cause depression in many people, because they not only procrastinate, but also constantly compare their life to others, which leads to dissatisfaction. Also social media are good at spreading lies and fakes, which can have negative effects on the economy - anti-vax panic, anti-GMO, political manipulation and so on.
It's the reality these days that people are attached to social media and internet. I just can't attain to see those posts that are looking for social attention and asks their worth.
Social media if not used properly, it can cause a lot of negative impact but despite of that if being used properly it can lead the economy to have a better status. Like today, most of the world's transaction happens on the web including social medias and there are too many jobs and businesses created through it.