I realized today that all the topic pages had gone missing. This was not intentional and they are all back now. There’s even a new feature. You can sort the topic posts by either recent posts (by default) or by popularity! This should be much more useful for folks who want to see new posts on a topic right away and it means you can filter for the “authoritative” posts for a particular subject.
If you have a topic to suggest, please let me know in the comments. Thanks!