I have a highspeed internet connection in my home. my nephew uses it to play WOW while chatting with his friends over skype. he was playing approximately 8 hours a day, sometimes more. this month i have been advised that we used more than 419 gigs of data. is this data usage so high due to skype and wow? approximately how much data would he use every day doing this as this looks like it is going to cost me big time by AT&T? please reply to jan@jsmagic.net