A small figure in a red circle indicates how many unread messages you have. In this way you are notified about the messages you have without being on the Facebook page and to review them in detail when you have time.
Mobile applications for smart phones like iPhone and phones with Android. The iPhone has a nice feature to display a message on the screen, showing who commented something written by you. Here is the “secret” how I know when and what my colleague said - my phone gives me a beep and I understand what is urgent or interesting, and who has written on Facebook just with a glance, without “hanging” around there. Thus, I can even decide whether it is better to call on the phone or use some other type of communication.
Instead of conclusion, I would share a personal practice that is an expression of my own vision for the use of social networks. I mentioned above how many e-mails I received from Facebook and how that was the reason to temporarily close my account. I had all sorts of friends from different areas, some of them shared what they had for breakfast or what their pet did or things that do not excite me much. The first thing I did after I activated my account was to cancel all e-mail notifications. The second thing was to remove from my contacts all the people who shared information completely useless for me. At that time the control over the groups of friends was very weak and there were no settings currently allowing me to set who can read what I wrote. Although now I can control who can read what I wrote, according to the type of information I publish, I continue to follow the rule not to pile "friends" just for their number who share a lot of information that is not interesting to me.
And just finally - if you obsessively play games or just waste time to use Facebook as a form of combination of gossip and BigBrother, then I can wholeheartedly tell you that there is no technology invented to help you yet. Facebook is just a tool and it depends entirely and only on you how it will be used!