Except that Bell's monitoring has not been accurate -- http://www.cbc.ca/technology/story/2011/02/09/technology-bell-internet-usage.html
Quote:
Bell's internet usage tracker may overstate the amount of bandwidth its customers use, the company acknowledged this week
Quote:
Shulak, who was skeptical, installed his own data usage tracker and found that over two weeks, Bell's numbers were consistently 50 to 200 per cent higher. He noted that he has only one computer in his home and no wireless access.
The best place to count usage would be at your router. Some routers might have such options available, others would require custom firmware. I don't have specific recommendations though.