Sorry if this is in the wrong place; I figured this would be the best place to put this.
How to use GNU licenses for your own software - GNU Project - Free Software Foundation describes how to make a software project GPL licensed, and it includes this:
Whichever license you plan to use, the process involves adding two elements to each source file of your program: a copyright notice (such as “Copyright 1999 Terry Jones”), and a statement of copying permission, saying that the program is distributed under the terms of the GNU General Public License (or the Lesser GPL).
Discourse does not include either of these with each file.
Is this a problem? Have you cleared that with a lawyer?
I’m interested because I will be GPL-ing (though probably AGPL) a Rails application of my own, and putting it in each source file is annoying. It seems required, though.