zlacker

Besides (YEAR) there also seems to be the convention of [pdf] and less strongly [video]. The latter two use square brackets instead of parentheses.

>>weinzi+(OP)
That's actually in the guidelines already: "If you submit a video or pdf, please warn us by appending [video] or [pdf] to the title."

>>lapcat+F
Oh, indeed, it's been a while since I read it. Then I would like to add the guideline "Read the posting, before you comment."