How can I cancel my bid on ebay?

[pototea]

I want to cancel a bid I made on eBay (http://www.tkqlhce.com/click-582776-5048476). How do I go about doing this? I am pretty sure it can be done without contacting the seller to have it cancelled as I have had buyers cancel bids on me before. How do I do it?

[pototea]

Never mind, I found it now. It is under "bid retraction"

http://offer.ebay.co.uk/ws/eBayISAPI.dll?RetractBidShow&pass=13ALza2njb5aaEdgt4e.Q/&userid=xxxxx

[qpw3141]

If you can cancel a bid you have made, what is to stop someone making a low bid at the start of the auction, then getting a friend to make a very high one that is retracted at the last minute ?

[pototea]

You can't retract in the last 12 hours of the auction

[qpw3141]

Ah, thanks.