Merge pull request #417 from github/open-source-survey

building-community: link to Open Source Survey.

Author: Nadia Eghbal

_articles/building-community.md

@@ -29,7 +29,7 @@ Start with your documentation:
 * **Make it easy for someone to use your project.** [A friendly README](../starting-a-project/#writing-a-readme) and clear code examples will make it easier for anyone who lands on your project to get started.
 * **Clearly explain how to contribute**, using [your CONTRIBUTING file](../starting-a-project/#writing-your-contributing-guidelines) and keeping your issues up-to-date.
 
-Good documentation invites people to interact with your project. Eventually, someone will open an issue or pull request. Use these interactions as opportunities to move them down the funnel.
+[GitHub's 2017 Open Source Survey](http://opensourcesurvey.org/2017/) showed incomplete or confusing documentation is the biggest problem for open source users. Good documentation invites people to interact with your project. Eventually, someone will open an issue or pull request. Use these interactions as opportunities to move them down the funnel.
 
 * **When someone new lands on your project, thank them for their interest!** It only takes one negative experience to make someone not want to come back.
 * **Be responsive.** If you don't respond to their issue for a month, chances are, they've already forgotten about your project.