because its costing ebay money !!!

some of the car breakers on here will know about this, one of the auction sites my dad uses is run like ebay well untill recently.

they realised they were loosing money by bid sniping so, what they now do is if someone bids in the last minute they extened the auction for 5, only people that have previously bid are allowed to bid in ''overtime'' meaning its impossible to snipe

it will not be long before ebay implements something along these lines