I agree with komponisto somewhat, even though I'm a newbie around here. I think the danger of this putatively 'democratically constructed' body of discourse sliding off the precipice into becoming a mutual admiration society or worse are sufficient that there needs to be some discipline applied to dismissive actions. Therefore, some form of reporting on why one has been 'disappeared' might be in order. In the case of being downvoted out of existence, an automatic message stating this could be sent to one's profile (attached to the draft) with minimal effort surely. Where a comment or reply has been specifically removed by an admin, surely it's common courtesy to say so, and maybe even offer a reason and by implication the right of reply where a misunderstanding has occured (yes, it happens!).