The disadvantage is that if the user lacks good judgment when using the Internet, it might hit. If being with a computer screen for a long time may cause lose sight.
The downside is that if the user lacks the judgment to use, it may be misled over the Internet. As if on a computer screen for long periods can cause eye damage as well.
The disadvantage is the lack of critical thinking in use, if the user may be deceived through Internet. As well as if with a computer screen for a long time may cause damage to eyes as well.