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  1. What are the current rules regarding transaction fees?
  2. What transactions are broadcasted by the QT-Client?
  3. How to the big pools act - what kind of transactions do say include in their blocks?

The background of the question: We are building a site where people can deposit bitcoins. Interact with the site to increase or decrease their balance and finally cash out to a Bitcoin address. (Like any Exchange, oder Just-Dice)

Obviously, we want to pay as little transaction fees as possible but still have reliable cash outs.

What is the best strategy to minimize fees?

marked as duplicate by John T, Salvador Dali, Murch, dchapes, Gopoi Feb 22 '14 at 3:24

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