I'm a bit user of Nuzzel and this isn't entirely unexpected, but I'm disappointed. Nuzzel allowed me to catch up on links from my Twitter stream without me getting caught up in infinite scrolling and distracting conversations. It didn't replace Twitter, but let me use it in a different way.

Nuzzel replaced a similar -- but much better -- tool that I can no longer remember, after it shut down as well. At this points I'll probably have to create yet another side-project to do what Nuzzel was doing for me.