Coin Exploit

And at the billions made overnight, people need to realize that there was more pushing mesos around than making them. Tax also took out on the large movement of mesos. I'm actually willing to bet money that a Meso Sack event introduces more mesos into the economy than this hack did.

That's not entirely true.

There's a reason they made all items 0 mesos.
Whether or not they realize that the above was happening is yet to be seen.

Yes, the rate of generation is relatively slow compared to old methods, but still miles and miles faster than normal accumulation.
Basically, people were scripting it so that they would generate max coins, then sell them, then generate max coins, and so on, all without moving (since the two NPCs required are right next to each other).