Hi everyone! This is my latest post for the Free For Customers newsletter. A newsletter about companies that made money without charging their core customer base a dime. This one is about reCAPTCHA and about how spam helped create a new way to digitize books. If you want to check it out, you can read it at the link! Any feedback is appreciated!
Really interesting post, thanks!
I would argue, though, that you should distinguish between "users" and "customers". The service wasn't free to their actual customer who needed help digitizing books, it was free to the users who aided in the process.
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