The WSJ has an informative article on spam that has some actual statistics. In particular, a typical response rate is 0.0023%, and the scum can make a profit with response rates as low as 0.001%.

The WSJ has an informative article on spam that has some actual statistics. In particular, a typical response rate is 0.0023%, and the scum can make a profit with response rates as low as 0.001%.

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