This is by no means all the data I collected, just the stuff I felt like putting together on lunch break. I've got this stuff broken down by day and country code, plus things that only mean anything to me.

A guided tour:
1. Total bandwidth should never have exceeded 1550GB. February was bad and I got socked because of it.
2. The peak bandwidth is simply a measure of the highest daily use in that particular month. The average is there for comparison.
3. I think everything up to October (I launched the site in March) was fairly low; so September's dip is actually more like August's explosion. I couldn't access the detailed data that far back because I accidentally deleted it around mid-June last year.

Keep in mind that this whole thing has been fully funded by user support, up until last month, so thanks for helping out!