I think they do not make any forecast themselves, just aggregate sources: at least in 2018 since in wikipedia https://en.wikipedia.org/wiki/Ivo_Luka%C4%8Dovi%C4

I think they do not make any forecast themselves, just aggregate sources: at least in 2018 since in wikipedia https://en.wikipedia.org/wiki/Ivo_Luka%C4%8Dovi%C4%8D https://en.wikipedia.org/wiki/Ivo_Luka%C4%8Dovi%C4%8D I can read: "As of May 2018 it had a team of six employees, and 300,000 users visiting the site per day": pretty hard to imagine world forecast with only six employees :)