Hi Teli,
Hey this is helpful stuff because I have to admit I've been trying to wrap my head around the offerings you have to see what I can tap into them. I'm pretty WP savey, so harder to work with solutions don't scare me. In fact, I might take you the other way to some thing really robust and just plain scarey.
Okay, I read the DF2RSS page you have and if I get it, it's a csv conversion to rss. So, then do you just import the rss into the WP? Do you have a cron job on that? Me webmaster = Me lazy
I didn't find your WPDFI page ... can you give me the url and I'll go read it.
What you might consider is a comparison chart of WPDFI and DF2RSS ... features chart to help users of various levels figure out which they need.
Okay, so I said I'd go to a scarey place ... here's some thoughts...
What about a little app that can service multiple datafeeds(csv files) for multiple WP locations ... with an ability to define each ... like directing traffic, eh?! I think more affiliates would get into the datafeed side if it were easier to populate multiple sites.
In fact, in my world something that sucks in feeds of all types and can publish them to a variety of locations, and those locations in turn produce more feeds, that get sucked into a variety of locations ... I know, I know, they call that syndication. But, how cool would it be to just create the network and then, man it from a single command post.
Sure would give me more time for working on backlinks!

A lot of us work on creating such a robust system, but at this point we're pieceing it together with various scripts to make it all work.