Personally, this could be a killer use of App.net. Blend social with RSS and get something like Pandora for newsfeeds. Not sure how hard it would be to pull an RSS feed and then push that into an App.net stream, blended with some meta data on content and a machine learning algorithm which enhanced your feeds by finding similar feeds that has a high correlative match to what you read most. Just sayin'
I've seen a lot of suggestions for replacements (either already out there or just an idea) since yesterday which want to blend social networks with RSS and personally it seems like a terrible idea[1]. I can't be alone in just wanting a news feed and not some mashup of the news and what's being talked about. [1] - I realise the irony in complaining about not wanting social news yet still following personal blogs, but…
There are companies along this line[1], but I'd prefer a solution with just rss usage/content data, and not the social streams as well.
[1] Prismatic and Percolate come to mind