"We want to create a system that allows for full PvP freedom but discourages ganking. The declaration of PvP you're referring to is something in the Korean version of the game that warns a PK target you're about to kill them, which we actually removed in our first Focus Group Test to see how the game worked without it. It's not quite perfect yet but we're getting close," Knox says.
Check out the full article over at TERAonline.it. Be sure to click the "spoiler: show" link if you'd like to read the English translation.