I haven't seen your article. There is no link to it. However, off the top of my head, no-matter what you're asked to write about, there are a couple of places that I use to research content
http://www.wikipedia.com Google (obviously), and
http://www.eZineArticles.com -- another ingenious way to get content is in forums.
Here's how:
1. find out what people are asking about
2. find out which threads are getting a lot more views on the forum (that tells you there "is" interest)
3. compile the answers to the questions; rewrite them in your own words; bundle in a bit of research if you have to; and BINGO! You have a great article!
Hope that helps!