I tried to comment on http://imgur.com/gallery/uBYbJ
My comment shows up correctly right after I clicked "save". I refresh the page, my comment vanishes. I repeated multiple times, same result each time.
I have no problem commenting on other picture. Is it closed for comment? If yes, don't even show the user the text box. If no, then why are comments dropped? Is it censorship trying to filter certain keywords in the comment?