[XR0CSWV3h3kZWg]

You won't really be able to process tx that low, you'll need to pay a tx fee proprtionate to the number of bytes. 1 satoshi per byte is a good rule of thumb for a very cheap tx. It takes more than 1 byte to describe one satoshi, so you can't get your tx to propagate.

[oh_sigh]

Theoretically the attacker could also be picking up 0-fee transactions, but my intent was to really say this: it doesn't matter how small a double spend is - the ramifications for the network are the same.