Well, for one last 2014 hurrah, here’s what I got for you:
Here’s a blog post that shows how to do it.
What do you do after you back it up? Maybe nothing, except just smile and know that you spent three minutes on a task that will help your career.
Or, you could email it to yourself for long-term storage.
Or you can import the list into your CRM. The instructions on the page above show you how to scrub/clean the export (Step 2), and how you might import it into another system (Step 3).