Each time you write a Wordpress post, you can also write and excerpt that is DIFFERENT than your page content and assign it to a category. You have no duplicate content issues because the post itself has different content than the excerpt sitting in a category.
Now imagine if there was a plugin where you could add multiple excerpt boxes, write DIFFERENT content in each, and assign each box to a different category. This means that for every Wordpress post you made, you could contribute DIFFERENT content to 5-10 categories exponentially building your blog.
Anyone know of an existing blog that can do this, or if it can be done and willing to code it?