Ethics of last minute auction "poaching"

Megasam: Your winning bid was at the last minute. You place a proxy bid. You delegated authority to Audiogon to "Re-bid" for you if someone place a bid higher than your current bid. If you let's say, bid $500 on an item that was currently at $49, without delegating authority to "re-bid" to Audiogon, the "current" bid would have been $500 when you place your bid, not $50. ---- Besides all that; the winning bid at all auctions held everywhere is the last bid place before the end.

If you go to UBid.com you will see that to place a "proxy" bid you have to use their "Bid Butler". If you do not use the Bid Butler, then if you bid $500 on an item that is at $50, the current bid jumps all the way to $500, just like a live auction if someone did the same.

How many of you who have sold things on Audiogon would be pissed-off and think is wrong for buyers to put more money in your pocket by bidding at the last minute?? Do you love it when you list a classified ad and a potential buyer offers half your asking price? Who of you think on a 14 day auction, for the person who bid the first day and then never logged on to Audiogon again for the next two weeks, should be entitled to special treatment solely for bidding first??
Should Audiogon get rid of proxy bidder and make it a "Straight" auction, where, if you bid $1000 and the last bid was $10, your bid get's registered as $1000 ??? This is how its done at Sotherby's and Christie's at their live auctions.

Some auction sites have a 5 minute overtime rule, where the auction ends once 5 minutes pass with no new bid. Kind of like "Going, Going, Gone". ----- If I am not there at the end I alway bid the most I am willing to pay and hope for the best.