Update: this legal notice has been superseded by the later legal notice dated 8/3/2012 linked at my sidebar and here.  What you see below is null and void after November 1, 2012. Because I allowed 90 days for people to see the link to the updated legal notice at my sidebar, what you see has some legal effect until then, but its meaning is already greatly limited by the later, superseding legal notice dated 8/3/2012.  On August 3, 2012, I hereby invoke the following clauses:

I reserve the right to revoke this blanket permission at any time

Anyone wishing to continue relying on this permission for additional reproductions or uses is required to check this blog at least once every ninety days and carefully read all legal notices linked to at the sidebar, even if they have previously read one or more of these notices.  

Everything below the row of asterisks remains unaltered from the way this notice has appeared since June 15, 2012, two days after the post was originally published.  

Joe Bruns says this in a comment about my post “Balance Sheet Monetary Policy: A Primer”:

Great article.  May I use this in my economics class?  The concept of creating money from nothing is foreign to freshmen in HS.  This completes the circle explaining why this concept is important.

I would be delighted to have any of my posts used to teach economics classes. 

More generally:

Though I reserve the right to revoke this blanket permission at any time, until further notice on this blog, with two exceptions noted below, I (Miles Spencer Kimball) hereby give anyone the right to freely reproduce and use any of the material on this blog to which I hold copyright as long as he or she properly credits this blog (including noting the web address of this blog) and properly recognizes my copyright on any and all reproductions and uses.  Anyone wishing to continue relying on this permission for additional reproductions or uses is required to check this blog at least once every ninety days and carefully read all legal notices linked to at the sidebar, even if they have previously read one or more of these notices.

EXCEPTION 1: This permission does NOT extend to anything I write or otherwise create that appears on any other website. It only applies to content taken directly from this website. That is, you must be able to see the content you want to reproduce or use at a web address that begins with the characters     http://blog.supplysideliberal.com   in order for the permission above to apply.

EXCEPTION 2: This permission does NOT extend to any post appearing on this website (including any content in the comments to that post to which I hold copyright) if the post has a notice of exception at the top of the post (above other content but below the title). 

Several notes:

1. For students, I think it would be especially valuable to send them to this blog itself, because they might click on some economics beyond what is assigned and learn even more!
2. The situation in which I can imagine revoking this blanket permission is if some part of the content of this blog is packaged for sale at some point.  I don´t currently have any plans along those lines, but I want to be legally careful. 
3. Anyone can freely link to anything in the blog and make “fair use” even apart from this permission.
4. Exception 1 means that if I take something down from the website, this permission no longer applies, since you have to be able to take it directly from the most recent version of the website.  Also, in the much more common case of a post that has had some revisions, it means that you need to use the most recent, updated version of a post, taken directly from the current version of the website at the time you need to download.     
5. A link to this notice appears on the sidebar.  If you are using this permission, you should click on that link at least every ninety days to see if the text of this permission has been changed in any material way.  For example, I just added the two exceptions and changed “quarterly” to “ninety days."  These modifications are included under the revocation clause.  The latest version of this notice applies.  The sidebar is currently on the right.