Make posts visible only to those within 2 blocks, or around 150 households who are close neighbors. Why 150 and not 1500 or 15000? Dunbar's number. https://en.m

Make posts visible only to those within 2 blocks, or around 150 households who are close neighbors. Why 150 and not 1500 or 15000? Dunbar's number. https://en.m.wikipedia.org/wiki/Dunbar%27s_number https://en.m.wikipedia.org/wiki/Dunbar%27s_number