1,000 True Fans

"The long tail does not raise the sales of creators much, but it does add massive competition and endless downward pressure on prices. Unless artists become a large aggregator of other artist's works, the long tail offers no path out of the quiet doldrums of minuscule sales.
Other than aim for a blockbuster hit, what can an artist do to escape the long tail?

One solution is to find 1,000 True Fans. While some artists have discovered this path without calling it that, I think it is worth trying to formalize. The gist of 1,000 True Fans can be stated simply:

A creator, such as an artist, musician, photographer, craftsperson, performer, animator, designer, videomaker, or author - in other words, anyone producing works of art - needs to acquire only 1,000 True Fans to make a living.

http://www.kk.org/thetechnium/archives/2008/03/1000_true_fans.php