This approach tends to work better for articles that are jam packed with information and/or those that take a broad, aerial view of the topic, but it can also work with articles that are a close up view of one specific topic. For example, I've written many articles on how to create an effective resource box, and from that one very laser beamed topic I have branched off articles on extremely specific elements of that already specific topic. I assure you, no matter what your article is about, you can write about it more in depth in a new article.
Article templates can also help you with your blogging. No matter where your writer's block is at a template of some sort will help you get through it one way or the other. You may look at the template and say, I can't write anything on that, but this one came to mind instead. Article templates are a great way to get yourself over a hump in your writing or they can help you come up with even more topics to write on. When you have writer's block you need to remember the traditional ways to come up with topics and then them about article templates.