How big and how often?

Averaging out the last 149,623 spams I've received, the average size of each message is 7.8kbytes.

Over the past twenty-one days or so, I've received an average of 6,959 spams a day, or 4.8 spam emails every minute of every hour, twenty four hours a day.

I'll share information like this periodically, to help others who are looking for data. Feel free to share info like this with others.