[robbiep]

Quick question - from someone who hasn't looked at bitcion since it was between 10c and $5 - since your transaction doesn't clear until the block propagates how they handle double spends?

[akvadrako]

The same way that restaurants make sure you pay instead of just leaving the building. It's mostly just not worth the hassle to save a few bucks.

[aminorex]

Double spends are overwhelmingly a theoretical issue. Credit card fraud, on the other hand, is pandemic.