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Re:Ask HN: Those making $500/month on side projects in 2021 ... by dave333 on Thursday December 23, 2021 @08:52PM (#29669071)
I run a string of free sudoku sites that have earned around $1000/month from advertising and donations since 2005:

https://fiendishsudoku.com https://samurai-sudoku.com https://sudokuprintables.org https://sudokuhints.com https://extremesudoku.info https://sudukopuzzles.org https://easysudoku.org

Re:Ask HN: Those making $500/month on side projects in 2021 ... by LordEthano on Thursday December 23, 2021 @09:22PM (#29669284)
You're the Match Group of free sudoku sites
Re:Ask HN: Those making $500/month on side projects in 2021 ... by dave333 on Thursday December 23, 2021 @09:40PM (#29669402)
sad, but I had to google what Match Group is :-(
Re:Ask HN: Those making $500/month on side projects in 2021 ... by jmnicolas on Friday December 24, 2021 @04:37AM (#29672057)
Why sad? Knowledge has increased so much that it's impossible to know everything.

Even just computer science it's impossible to know everything.

Relevant xkcd: https://xkcd.com/1053/

Re:Ask HN: Those making $500/month on side projects in 2021 ... by jmnicolas on Friday December 24, 2021 @04:35AM (#29672044)
Could you give an idea of how many users do you need to get to $1000 a month from ads please?
Re:Ask HN: Those making $500/month on side projects in 2021 ... by dave333 on Friday December 24, 2021 @05:43AM (#29672466)
Ad rates are around $3 CPM meaning for 1000 page views you get $3 so do the math. Sudoku sites are unusual since one page view can last hour(s) as the user solves the puzzle.
Re:Ask HN: Those making $500/month on side projects in 2021 ... by jmnicolas on Saturday December 25, 2021 @01:43PM (#29685776)
Thanks and merry Christmas!