Now, if we were still JWs, we wouldn't need to worry about "friends" just disappearing. The elders would be promptly onto the matter and soon we'd know what had happened to these people who tried to disappear. Ah, such sweet memories...
I actually prefer to just lightly wonder what has happened to posters and try not to think in terms of how much poorer I'd be if I never heard from them again. As an earlier poster said, People come, people go; that's life.