There is a "delay" number in your profile that says how many minutes elapse after you post, before your comment shows up to anyone else. If you want to set it

There is a "delay" number in your profile that says how many minutes elapse after you post, before your comment shows up to anyone else. If you want to set it to 0, go ahead. I guess the idea is that if you post something, er, stupid, you can edit it and save face.