If your nickname appears in the comment window, send a message, right? Then, if your ID
 name is Hayeon, there are people with IDs like this, gkdus123, and if it's Minjeong, there are people with IDs like alswjdWkd, and
 if you google that ID, you'll get information about the ID that person uses...
 so I only write anonymous posts + comments
 . I can infer that if you use initial consonants and such incorrectly, you will be reported.
 In particular, in some hospitals I know, I personally watch the community and report the post for deletion, and the officials take it down.