I just bid for something that i bid for before and didn't win (i don't know if it's a duplicate item or the orig, if the winner didn't pay them)-
and my bid was not accepted!!! 
A note popped up from eBay saying it was probably because the seller was limiting the number of bids.
What's that all about? How strange. They don't want bidders??!! 
I have over 2000 feedback, i am a reputable buyer and seller so it can't be about me personally.