Princess:Nexon intended the boomers to multiply so it's not hacking.
Yes they intended them to multiply, but did they intend them to have an overly massive spawn, lag out a map, and get massive exp for low level characters? Last time I checked Nexon wanted people to work for there levels, not sit there have a fire mage mist a map and hold down an attack key while trying to stay on a ledge.
Hacking, isn't necessarily using tools, it's taking advantage of open oppurtunities. No matter how you go about it.
When I look at it, I see it this way. There is a bug in the game, that lets people vac monsters by using a program. When you look at boomers, I really see no difference them, and a vac that causes immense amount of lag.
NPXlMooMyCows
=)