How come "Darwin's Theorem" appears so often? It's quite unknown, with one review on Goodreads and 4 reviews on Amazon Is this a result of the author spamming

How come "Darwin's Theorem" appears so often? It's quite unknown, with one review on Goodreads and 4 reviews on Amazon Is this a result of the author spamming his own work? Edit: Looks like it, short skimming of "darwin's theorem site:news.ycombinator.com" shows that all links are from user tjradcliffe, who is the author. A case for manual curation of data.