They are not keyword targeted, but contain general information about the topic of your choice. You can split them up into 350 word articles to double your value. They are easy to read for humans, because they don't contain spun content.
You can use the content as is (keep in mind it's not 100% original) or run it through an article spinner to create even more content. Add them to your website, autoblogs, mailing list or newsletter, backlinking strategy,...the sky's the limit.
TIP: use them for backlinking; add a simple line with your link and keyword to send visitors and search engines to your main site.