They had used wording from our page to describe our organization, which is actually a good thing!
Yes, this had occured to me when I ran a few of my more detailed pages and many of the sites that I quote were returned. I figured it would bring some random traffic to my site when people check to see if I'm plagiarizing and find a "fair use" quote and a link instead.
With as many links as are on my site it is typical for me to find a dozen referrals per day from search term "link:..."
But returning to the original use, it is good to find that no one has (yet) just copied portions of your site and used them. I've found one, but it is not well trafficked and they didn't steal big portions, just snippets--so it's hardly worth pursuing.