About
One in a Hundred is built by Jeremy Lee. It started with a claim that earning about $30,000 a year puts you in the top 1% of earners worldwide. The claim turns out to depend entirely on which definition of income you pick, and the gap between definitions is the point of the site: every number carries its sources, the spread between them, and a grade.
The site is static and costs nothing to run. The work is in collecting the numbers, checking them against each other, and writing them as a sentence someone would repeat.