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Thanks for sharing. Do you have any idea how many sales came from your newsletter and/or twitter?

• SupremumLimit 13y ago
  The conversion rate for the mailing list is 5.7%, assuming people use the same email address to buy the book. I don't have the stats for Twitter, sorry.
  • IThoughtYouGNU 13y ago
    That seems very high. You are apparently a very good technical writer.