"These people"? Sounds a bit hostile.

Anyway, many social networks attempt meet pain points. Women with naturally curly hair deal with alot of issues. Lack of products, good stylists, societal issues (e.g., "is curly hair professional?"). It's the kind of thing you probably don't think about unless you have curly hair. Lots of bonding among curly-haired women is already occurring online. A central network is a great idea--I'm thinking it will be really popular. It's part of The Long Tail.