the minimum transaction fee is 0.000 btc thats currently 0,0 cents per transaction...
Fixed that for ya, but...shhhhh...
this is what they don't want you to know

Exactly. You actually never have to pay a transaction fee, and you will probably never be required to do so. However, including a small fee such as .0005 BTC provides extra incentive for miners to include the transaction within a block.