Social networks mean that we can communicate with other people pretty much whenever we want. When personal computers were popular it was easier to monitor how much time a child might be spending online. Due to mobile technology that’s now much more difficult.
Social networks can be great fun but just like talking about what we get up to offline, it’s good to have some family rules about being online and when enough is enough. Some parental controls enable time limits to be set which you may want to check out.