The idea is awesome, but it sort of loses its usefulness to people who aren't math experts. It's very clear by looking at the website that it's _not_ meant to be a Wikipedia for math. That's definitely not a bad thing, but I think that this website leaves an opening for something conceptually similar (but different in its implementation) that would be a sort of digital pathway through as many math concepts as possible -- for example, you can start on a page formalizing the idea of numbers and click links to navigate to addition, and then later on to multiplication, etc. allowing one to study math from the ground up. Or, you could start at a high-level concept and work your way down to the simple math. The purpose wouldn't be for researchers to better connect math, but for students trying to learn how math comes together in a broader sense. I think that a site like that could serve the same general purpose we see here of collecting math into a big catalog, just in a way that's more friendly to newcomers.