Disadvantages of online entertainment

Well, it depends on what you consider advantage or disadvantage but in my opinion there are a lot of both of them.

Advantages:

Education

Entertainment

How-to's

Fast way to get information

Disadvantages:

Illegal activities and downloads

Inappropriate content in ads, videos, movies, and websites

Can cause addictions

Lose social activity with others when you're on too much

Some addictions can be hard to brake

there is more for both but, i'm just summing it up.