If you just witnessed tactical downvoting, is it a reportable offense?
Recently miffed about an answer I gave that was technically identical to a competing answer, and although my answer was posted first, it was down-voted, the competing answer up-voted and accepted.
That said, the other answer was a better answer and deserved the up-vote/accept, but is it kosher to down-vote an answer simply because it's not the best response. Or is it common to have competing answerers down-vote your answer to receive better placement in the list of answers? If so, what sort of visibility and/or recourse does one have to justify their answer?