The Math Less Traveled by Brent Yorgey is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.
Essentially, this means you are free to copy, redistribute, modify, or otherwise use anything I write on this blog, as long as you attribute me as the source (by giving my name, the name of this blog, and the URL of the page from which the content is taken), and don’t use it for any commercial purposes. For more details, follow the link above. If you’re interested in using something I wrote for commercial purposes, you can of course contact me.