Welcome to the Hit List!
It turns out that some people who play the game are just jerks. They live for nothing else than to make your gaming experience miserable. We all know the type, you get attacked out of the blue twenty times in a row and then if you hitlist the person he robs you for weeks. You write someone a polite message and then they try to lay into you even harder. There is one thing that these kind of "Grief-ers" fail to remember though: They are way more emotionally attached to the game than most other players.