oahuhiking on "Blog entries not showing up in Reader"

I already submitted this question a week ago but did not get any response. My blog entries are not appearing in the reader under their tagged keywords. For example: If I write a blog entry about a hiking trail I then use hiking as a keyword tag. It should show up in the hiking category of the reader. It is not.
My recent blog entry is about birds. One of the keywords is Animals. This blog entry is not showing up in the category of animals. I have less than 10 keyword tags. Can someone please fix this.