Its a brilliant concept if you live on a dirt road in a country where there is no official street name or mapping for your dirt track.
You might not have the means to access what3words, but once someone has told you your address, even if you are not literate you have a good chance of being able to tell someone exactly where you are.
I just found PushBikeHome near Birmingham 🙂
Edit: Has what3words been updated? I remember finding a fairly relevant address outside my house but they all seem new now…perhaps they’ve had an update and my address has changed?!