That's more like neutral evil. Chaotic neutral characters are more... insane. They are chaotic for the sake of chaos, no distinguishable motivation behind their actions. A good example of chaotic neutral would be the Joker from Dark Knight.
You've mixed up neutral and evil.
Chaotic neutral is honestly the alignment most people are. You and I are probably chaotic neutral.
Chaotic /evil/ is what the Joker is, those that run about causing chaos and all that jazz and murdering folks.
Though, I recall, chaotic neutral has also been used for the mentally insane (how do you apply morality to one who cannot control their mental state?). Not to say chaotic neutral *only* applies to the mentally ill. The Joker...I've always liked to think he isn't crazy and it is a perfectly logical philosophical choice:P
Anyways, I would suggest being secretive and subtle due to how hated warlocks are in the general Horde and Alliance (To a much lesser extent Forsaken and Blood Elves, and I'm not certain if Gilneans hold the same aversion). I might suggest gathering (whether physically or through an established location in chat) in hidden locations, whether that be something similar to the Slaughtered Lamb or Cleft of Shadows (for a place within a city) or to make use of a location outside the prying eyes of the guards (Deadwind Pass certainly comes to mind for me).
Edited by Aziel on 5/15/2012 9:54 PM PDT