As an early user, I started contributing less when I realized this was happening. Why should I contribute to something that's not going to be accessible by non-

As an early user, I started contributing less when I realized this was happening. Why should I contribute to something that's not going to be accessible by non-users? Wikipedia didn't need to wall off content to grow. Nor did stackoverflow, everything2, urbandictionary, and basically every user-generated content site since expert sexchange.