Rather than long/lat, I love the concept of using Zooko’s triangle for a geospatial problem, such as:

  - human meaningful
  - decentralized
  - secure

However, w3w's isn't that. It is a centralized system which is actively enforced and it isn't secure.

There is actually quite a lot of critics of w3w, such as: https://cybergibbons.com/security-2/why-what3words-is-not-su...