I remember when ICQ was very popular in the beginning of years 2000, I didn't know it is still alive today, while the famous AOL AIM died a few weeks ago at the end of December 2017, AOL AIM was the most used messenger in north America.
I believe Facebook will know the same destiny as AIM in few years and will be replaced by Steemit !!!
Let's remember a few old sounds :)
i don't know if facebook will have the same destiny