I'd pay to have an easy to ingest river of what my friends have in their stream. When i use flipboard, I see a few too many articles that I've already looked at

I'd pay to have an easy to ingest river of what my friends have in their stream. When i use flipboard, I see a few too many articles that I've already looked at on my other devices. BTW - I'd like to see the idea of reading my friends river of stories implemented with instapaper.