Here's something that just occurred to me.
Two people use the automatic bidding system. One bids a max of 5,000 the other a max of 6,000. The bidding starts at 100L and then the system will automatically bid the two people against each other until it almost immediately reaches the lower maximum bid. Then it would sell for 5100 I guess to the 6000L bidder. Unless the lower bidder is notified and has a chance to rebid of course. So really this seems to ensure the maximization of price to Linden Labs compared to what they might get with a purely manual bid and rebid system. Is there a flaw to this logic ??