pauloaguia: The answer to you is yes!

But if your settings allow for you to not even have a message box, then the answer is clear that you do not wish any congrats or good lucks.....

If I play you and you refuse to offer any greetings or whatever, then I can always put you on enemies list as to not have to play against you, I suppose this si still possible if i come across someone who has no box present, but why make it so hard?