whenever I leave a jump bid in a furry ych or adopt auction and nobody counterbids I start getting anxious that people will think I'm playing dirty and trying to suppress a natural bid progression that might go higher.
fwiw I do not do this; I only use jump bids when I believe (from prior auctions from the same artist, typically) that the bidding will not end near the current price and I can just save myself some back-and-forth by taking the bidding straight to the bottom of the range where it might be contested.