M. J. was always a pleasure a talk to, and always reached out to people who were expressing depressive or self-destructive thoughts, because he too was sufferer of depression. And when he was tweeting to no one in particular, his sarcastic wit and dark sense of humor shone through, and was a pleasure for those of us who enjoy that sort of thing.
Twitter has suspended the @MJLanceErotica account, presumably because he was blocked by prudes who didn't want to be followed by an erotica author.
If you got a chance to talk to M. J., or you enjoyed having his tweets in your timeline, then don his face in solidarity. There is no replacement.