>Q: How likely is it to undo my transaction A: The likelihood is approximately the same as the percentage of mines using bitundo. Right now, this is pretty low

>Q: How likely is it to undo my transaction A: The likelihood is approximately the same as the percentage of mines using bitundo. Right now, this is pretty low. If I understand correctly, the time left doesn't really matter. It should be totally dependent on their share of hashing. If undoing requires them to pick the winning nonce, it should be much like a lottery (your chance at any given time depends more on your share of purchased tickets more than anything else). And if that's the case, this seems like a pretty pointless service. Until they get a large share, it won't work the vast majority of the time. And even when they do get a large share, undoing still won't work most times.