If, one day, I really go away, will you still remember me? Once upon a time, in champange color, I went crazy and asked everyone online: if you suddenly realize that it has been a long time since we last contacted, and the usual ways of contact are no longer effective or there is no response at all, what will you do? Maybe, this kind of situation can be avoided. What methods would you consider to prevent it? The "long time" is arbitrary, based on your psychological perception of time cycle.