This isn't surprising - what percentage of Wikipedia users actually contribute to Wikipedia? Probably less than 10%. What percentage of users actually comment on Hacker News? Probably not very high (I don't know, though).
You don't need all your users to be active to have a useful or viable product.
Facebook is an edge case - they have a huge percentage of active users.
You don't need all your users to be active to have a useful or viable product.
Facebook is an edge case - they have a huge percentage of active users.
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