I'd add: 4. Making all your traffic look "neutral" to your ISP, in places (think corporate / college campuses, cellular data, hotels and boarding schools, not

I'd add: 4. Making all your traffic look "neutral" to your ISP, in places (think corporate / college campuses, cellular data, hotels and boarding schools, not countries) where net neutrality isn't enforced and certain traffic (most often torrenting, video streaming and/or gaming is deprioritized. I guess this could be classified as blocking or censorship, but deserves a separate category IMO. 5. Places where the networking hardware messes about with your data. I've seen places that would add their own iframes to unencrypted HTML content, which broke some software because their algorithms to detect what was HTML weren't very good.