Would you pay $1/year for spam-free email?

A few months back, my colleague, Matthew Hurst posted a link to a interesting infographic from the New Scientist that visualizes data from a spam-bot called “Storm.”:

(click the image the see the full-size graphic)

The visualization is interesting, but doesn’t explore what I think is the most interesting question with regards to spam: “what’s the marginal revenue per spam email sent?” Based on some of the numbers presented, here’s my math to back that number out:

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