I don't know either. My guess is that's for very laze search mechanism. It's especially useful for geohash, so you can look for other pictures in the same small / wide area.
Maybe less so for lat/lon.
https://www.pubnub.com/guides/what-is-geohashing/
provoost / Sjors Provoost
npub1s6…dwk4c
2024-09-01 09:45:22
in reply to nevent1q…08vx
Author Public Key
npub1s6z7hmmx2vud66f3utxd70qem8cwtggx0jgc7gh8pqwz2k8cltuqrdwk4cPublished at
2024-09-01 09:45:22Event JSON
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