I doubt anyone is going through by hand to censor comments.. It seems much more likely that a high number of down-votes or short posts triggered some kind of an

I doubt anyone is going through by hand to censor comments.. It seems much more likely that a high number of down-votes or short posts triggered some kind of anti-spam filter. I think the reason for the 'ghosting' rather than something like account deletion is to make it harder for spammers to notice and circumvent spam filtering. I know that craigslist does this too. It sounds like you are being filtered in error, which sucks. Maybe the easiest thing to do is to make a new account?