1. It might kill the website
2. It offers discoverability..
3. ..and an escape from banner ads
4. It looks consistently great
5. It’s a sensible choice for a corporate blog or nonprofit site
6. But remember, it’s not open source
7. The Medium ad model is native
8. Paywalls can be implemented
9. Total time reading (TTR) is an important metric
10. These sites are live
The Bold Italic
The Twitch Blog
Signal vs. Noise
The Black List
Film School Rejects
Number 1 is not going to happen anytime soon, but #5 is doable.