Sublime
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Both mechanisms, of social classification and social cohesion, also explain why, in the modern aspiration economy, brand affinity is created not economically, but socially – and why best loyalty programs treat their customers as community members.
Ana Andjelic • The Business of Aspiration: How Social, Cultural, and Environmental Capital Changes Brands

People aren’t governed by their demography; they are governed by their cultural subscriptions, which are reflected in their tribal memberships.
Marcus Collins • For the Culture
That’s the simple ratchet power of network effects. Connected tribes are more powerful than disconnected ones. Individuals who get in early have an incentive to bring others along, and so they do.
Seth Godin • This is Marketing: You Can’t Be Seen Until You Learn To See
we want to outline two groups of people. The first group is the people gaining status, your customers. The second group is the people giving it to them: Spouse, Kids, Parents, Extended Family, Colleagues, Bosses, Friends, Rivals, Competitors, etc.
Alex Hormozi • $100M Leads: How to Get Strangers To Want To Buy Your Stuff (Acquisition.com $100M Series Book 2)
Tyler Alterman • The Dawn of the Metatribe
A tribe is a group of people connected to one another, connected to a leader, and connected to an idea.
Seth Godin • Tribes: We need you to lead us
It's still possible to have a target customer in a Post-Demographic world. But instead of the old demographic segments, target narrower, self-created tribes of taste and interest.