I think I have had one warning before and it was for spam,which I still don't get to this day,but anyways it didn't really bother me.Warnings are useful when it comes to the 'bad guys',but other than that..I really could care less about them( i dont plan on breaking the rules anyway).If I do get a warning about something,I'll usually just find out why I got the warning and then move on with my day.