I wonder if #PlusCodes could viably be used as hashtags to generate some sort of geographically #local feed.
The first six characters of a plus code denote an area of roughly 5x5 km², so if I take a full plus code like "9F4MG98H+G3", and then create a hashtag using the first six characters, like #9F4MG9, adding that hashtags to posts would allow others to find activity in a certain region.
plus.codesPlus codesPlus codes are short codes for locations, for places that don't have their own street address.