Centralization and Federation of Community Gardens

Should a community garden be centralized or federated? or something else?

Are community gardens imbued with brands themselves? Party Corgi Network and egghead function as a community gardens. Can a group of 3-5 people decide to pool their work together under a specific banner using the community garden approach?

ad-hoc gardens might not have names or specific boundaries, somewhat like an undocumented webring. A group of people that tend to link to each other's writing in their own posts on a topic or group of topics.

egghead is in the business of a centralized, monetized community garden. The videos are contributed by instructors, who own their own IP and brands, marketed by a combination of egghead and instructors.