How the list was chosen
I picked each account by hand because the person regularly posts about maths teaching, charts and data, or money and personal finance, and was active in the last few weeks. Nobody paid to be here and none of them is affiliated with this site. Being in the pack means their work is useful for this topic, not that I agree with everything they post. If you are in the pack and would rather not be, tell me on Bluesky and I will take you out.
Know someone who belongs here? Send me their handle: @sizuriatto.com.
Prefer to learn the numbers yourself? The free calculators, the blog and the books are the other half of this site.