I like the idea. Do you want to do it just for fiction, or for non-fiction as well? There are alternatives for photojournalists and micropublishers, but reportage has lagged behind, slightly.
I think you should go vertical and integrate with something like OpenCalais for subject-matter tagging which you can use as the basis of a recommendation engine, and some sort of document-based CDN.
The focus is on fiction, but we have categories for non-fiction and "other". Ultimately, contributors decide what they want to fund.
OpenCalais looks interesting. Something that advanced would be much farther down the road for us, though. Right now we just want to find and enable great written stories.