Haven't used it myself since it's in beta but I have been keeping my eyes on this for a while: https://beta.readng.co/, https://twitter.com/readngco
It's pretty basic right at the moment and we've a lot left to build (largely a reading list only, we've got more in the works) – but here's my profile as a preview, since our marketing site & messaging needs a bit of work: https://beta.readng.co/user/joe
Is that something thats on your roadmap?