In reply to ianstevens:
Simpler as in an alternative to GPS coordinates in a guidebook/online guide, rather than a specific response to the OP (sorry - should've been cleared about that!).
I've already used it for meeting people at crags; rather than saying "Up the path, left at the funny tree and look for the boulder that looks a bit like a frog", just say give them tree.busy.canoe and it gets them there. The googlemap and W3W grid already downloaded, so no worries about dodgy data/GPS signals.
(Ha! Turns out tree.busy.canoe is actually a place in Alaska...)