Density density density. You need to identify a core set of densely connected, ~1,000 people to get your social network started. MySpace had the LA music scene. Facebook had Harvard. LinkedIn had the Silicon Valley hotentots, thanks to Reid's reputation and network. Quora has a similar group of highly active, densely connected users from Silicon Valley. So you need to think about the ideal community for your network…
Interesting concept, never thought about it like that. Any related articles/links?
Ask HN: How to market a new social network?
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