Doing my part to increase the AT&T average March: 2.8 GB
April: 3.3 GB
May: 5.1 GB
June: 2.7 GB
July: 1.7 GB
August: 4 GB
My billing cycle starts on the 13th; six days into this cycle I'm at 641.7 MB, with another 350 MB on top of that from today .
Oh yeah, I'm grandfathered on the old "unlimited" data tier.