Exactly. As a lot of other comments have mentioned, using URLs would have been a better idea, but its irrelevant now. Assigning the same IP to a different machine would have been a perfectly acceptable (and most straightforward) solution. I fail to see why they didn't choose to do that.

We're all interested here in learning from tinygrab's mistakes, not criticize them after the fact. Why patronize us with that "would have taken _months_" quote instead of giving some technical details about what really the problem was?