The big 'problem' is posting in small communities and not getting the financial return you would get in a slightly larger community.

For example, we in the Brazilian community know that it is much more profitable financially for Brazilians to explore other communities, rather than posting in our own, even though we are grateful when they do.

So we decided to curate the posts through tags. Today I believe that at Hive, tags are stronger than the communities themselves, because of the reach of being able to use tags in other communities.