What's Hogging the Bandwidth?

        "On a Mac forum I participate in a fellow posted a problem he was having, all of a sudden, with excess bandwidth usage," is how Jim Hamm begins.  He explains, "He normally uses about 40GB per month, but in the last 3 days he has downloaded 120GB! So far he has not been able to identify the culprit, but the following information has been provided to him for further analysis.

        "If you should ever have a concern with or want to know more about bandwidth usage, here is an article explaining how you can open the nettop command program in Terminal to see which processes are generating the most network traffic."