I've been playing a bit with websockets, so I'll explain some of what was done:
- /all/new is updated live, new posts are automatically added as they are submitted
- In some of the pages that list posts (namely /all/new, /new, /hot, /all/hot, etc) the votes and comment counters are updated automatically
None of the previous changes listed affect sub pages (yet)
- The notification count has live updates too.
To enable this, go to your user settings (the gear icon) and enable experimental features.
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