My list is trending. Why didn't I get a notification?

Earlier today I wrote this list: numbers guesswork
  1. Just now I went to ( on my laptop (NOT my iPhone) and it shows lists that are trending.
  2. You can't log on (yet).
  3. You can't ❤️ or 🔁 or comment on a list, but you can read some.
  4. As I'm scrolling through the Trending lists, I see mine!
  5. I then went onto on my phone, and sure enough, there's my list under Trending Lists.
  6. Why no notification? Has anyone else who is reading this had a list trend today? Were you notified?
  7. What's the deal?