The pictures actually are helpful. This method looks good to me because it doesn't require a big investment in equipment, doesn't involve grafting, and doesn't waste a whole frame of brood. And it looks like it should produce just as good quality as the methods that do. I think this is just what I've been looking for.
In the article Mr. Andres says that he is writing the article in the middle of winter, but doesn't really say when would be the ideal time to actually do it. I know that you raise queens when you need queens as long as drones are available, but what is a "good" time to do this for expanding your bee yard?