There have been a few instances when I've stopped 
bidding or ignored an auction I would have 
otherwise paid a LOT for due to questionable 
seller/bidder issues.  I also have a problem with 
auctions getting cut short (before they were 
supposed to have ended), and then immediately 
relisted another way (with a new reserve, new 
starting bid, new "method"), and I usually won't 
give them another look if that's happened.  Maybe 
I'm missing out, but I prefer honesty and 
fairness. ^_^