This is a great example of what Paul Graham calls a "submarine", (I think nowadays the common term is "content marketing"?). Here's the 2005 essay: http://www.

This is a great example of what Paul Graham calls a "submarine", (I think nowadays the common term is "content marketing"?). Here's the 2005 essay: http://www.paulgraham.com/submarine.html http://www.paulgraham.com/submarine.html