Off-topic, but why do random comments have no downvote arrow? Not that I'm at all inclined to downvote anybody, but guessing some kind of web glitch showing up. Thought I should mention it.
Edit: the downvote anchor is completely missing in random fashion. Didn't notice the problem in other topics.
Downvote arrows disappear after the time window for downvoting is up, and that time window is shorter than for upvoting. Also, no one can downvote direct replies to themselves.
Edit: the downvote anchor is completely missing in random fashion. Didn't notice the problem in other topics.