Move from AT&T to a decent provider?
I don't know if you are from America, but government sponsored monopolies is what we basically have to deal with. I know it sounds easy, but in my area there is only two choices. Time Warner & AT&T. But Time Warner cost twice as much for the same speed, requires a contract, and throttles traffic. So which evil do we go with?
If you use KDE4 then knemo is a good tool to monitor your traffic.
Tex is right, I have used this tool for years just to see how much bandwidth I use on my network. I am already at a couple TB's this year alone.
If you are like me, you have several computers on your network. My main desktop is also my media server. So the outgoing bandwidth on that machine is through the roof because of the movies I stream to my PS3, xbox, and HTPC. I also download tons of movies & music (etree is awesome!) on my laptop that I then transfer to my desktop. So now the download count is off on the main desktop.
I need to find a way to just count the internet traffic and not the home network traffic. If I had a PC converted to a router then it would be easy. But I don't. So I need to look around for some ideas.