Fwiki seems to be an RSS Reader that you can make private or public, not only that you can tailor its look and even blend it into your blog.
The main premise is that it is not only an RSS Reader, you can further create spliced feeds, each called a master feed, basically a river of news…see more.
Add feeds (and tag them) or view a list of tagged feeds to choose from and add, you can view these in the Feed Reader, from these feeds you can create a Fwicki ie. a spliced feed with a page to view it (kind of like a folder river of news), make as many as you like (you can even tag your Fwicki’s).
Other Public RSS Readers
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