See, Milt went searching for his name ("Milt Epstein") one day with Excite (which just happened to be the random search engine that Netscape chose for him at that moment). It turned up 17 matches, each of which was designated with a percentage number indicating how good the match was. The 37 factoids page was one of the resulting pages, and the matching percentage was 37%.
See for yourself. (It may not be true anymore. These things can change.)