That's true. I use Newsblur. It has social features, but the community is so small and the social aspect is so limited that it has little value. With that said, the people who engage with it tend to be authentic users interested in high-quality content and respectful discussion. Discovery of other users is terrible, though. You basically have to stumble upon them if they're interacting with an article already in your RSS feeds.
Idle musing 1: A mechanism for all these small readers to federate their trending content? Out of many comes one?
Idle musing 2: These tools were mostly written a decade ago. It might be possible, with the current state of the art, to extract a more useful signal out of a smaller pool of users.
