One of the new features I have planned is to apply this analysis to user's blogs. It'll be similar to the standard TagShadow, except that instead of books I'll be plotting blog posts.
Hopefully this will be a general service with widgets and such in the future, but the initial iteration will be a rather manual process. I'll be testing with My Blog, but if you have a SFF related blog ( and you tag your posts ) link to it below.
I'll generate plots for the first dozen and see how this works.