Paying to seed a user community

J. C. R. Licklider described the importance of communities of common interest rather than common location in his widely influential 1968 paper on The Computer as a Communication Device. Today we have many examples of the importance and value of user-contributed content and community. But, people's time and attention are limited, and starting a successful community is difficult. Yelp.com has experimented with paying early users for reviews of restaurants and other local businesses.

Would you be willing to contribute content in an area you know about for a small fee?