It's just not productive to keep bringing it up.  I will, however, admit that I am wholly confused on what seems to be a fairly simple topic.  I have been working on Lesson 3 of the Action Plan and have spent an entire hour debating the difference between a niche and a keyword (and whether there even is a difference).  I breezed through putting together my lists of niches, only to look back at them and realize that something seems off.  Perhaps this is a sign