Some of you may already know about this, and some of you may not.
This is one of those things where I keep telling myself not to tell anyone about this secret, but I find myself doing it anyway.
It's a way to bid on Ebay at the last second, to ensure that you win the item you are bidding on.
http://www.esnipe.com/
They give a 14 day free trial. After that, they have a somewhat complicated billing system, that if you are interested, you should probably read for yourself.
http://www6.esnipe-east.com/Services/
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