http://birthdaysudoku.com - personalised sudoku puzzles. I've never made any mon...

		jonp on July 25, 2011 \| parent \| context \| favorite \| on: Ask HN: What has been your least profitable side/w... http://birthdaysudoku.com - personalised sudoku puzzles. I've never made any money from it, but I get a kick out of knowing that people in far-away places are using something I've made.