Now and then, I receive a message from a friend on wechat as a verification of whether he is deleted from my list. Usually, the content of such a kind of message would be in the form of greetings. It will avoid embarrassment if your friend still saves you a room on his list.
If he was removed, the message cannot successfully be sent to me. And he would see a hint: “The one you sent is not available because you are not on his list, please add him as friend send it again.”
I can imagine when the guy knows he is not on the list or is blacklisted, he definitely deletes me. Actually, I have never sent such a message to all of my friends. But I am sure that some guys did that to me. Once I contacted them for some cases, I saw that hint. I defriended his icon from my list and did not choose to add again. Let it go.
People come and go. Regardless of how many friends on the list, there are few good friends whom you can keep in touch with on regular basis. According to the Dunbar's number proposed by Robin Dunbar, a professor of evolutionary anthropology at the University of Oxford, it suggests a person has his size of community number within 150. That study was conducted on the basis among people who live geographically close to us.
We are more convenient to contact people all over the world by internet. This helps us make easier to meet more people. Usually, people have many friends online as the development of social network; we easily access to internet meeting more people than we could do in reality life. They might have a wide range of friends over 1000, or even more, however they often only talk to few fixed friends. Those fixed ones are real friends we can share and talk.
If so, we really do not have to worry about that we do not make many friends. Fact, a person has the limitation of energy, time, and restriction of data analysis from a human being brain,etc. 150 probably is the maximum number of a person’s friends he could make and cope with.
To be honest, I do not have that many friends over 150 to contact so often. Only quite few friends I can usually connect with. Over two thirds of those friends on my list I hardly recognize them. Those we barely know only met once or several times before. What If there were on such good friends? It is also quite normal. We are living in different social circles.