> I have almost 500 HN "rep" and I still can't find any way to downvote. Is this documented anywhere? At Stack Exchange downvotes require 125 rep to cast, and cost you 1 point of rep for each answer downvote. (Question downvotes are free, but still require 125 rep to cast..) This is all listed in the FAQ.
The min. requirement to downvote, I'm told, moves upward ever so slightly. I think I managed it just past 500, but that was several months ago (I lurk and/or comment on obscure communications articles). You're sitting at 496 as I write this so you're still a little while off.