diff --git a/How-to-contribute.md b/How-to-contribute.md
index 3ebd50e..c440ded 100644
--- a/How-to-contribute.md
+++ b/How-to-contribute.md
@@ -29,7 +29,7 @@ git diff master..experiment > my_feature.patch
 
 Then attach my_feature.patch to a ticket.
 
-If you are on github, you can use the button to issue a pull request for your changes to be pulled into the main repository.
+If you are on github, you can use the button to issue a pull request for your changes to be pulled into the main repository. Please try to write a useful and well-formatted commit message -- see some [formatting guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html) and [tips for integrating with the issue tracker](https://www.assembla.com/spaces/tracks-tickets/github_tool).
 
 If you've found a bug or got a feature to suggest, visit the Tracks [Assembla Space](http://www.assembla.com/spaces/tracks-tickets/) and create a ticket. You'll need to [create an account on Assembla](http://www.assembla.com/wiki/show/alWI9M0eWr3zoYab7jnrAJ).