@simon @dreid just what this question made me think of, and some uses of blog categories or fedi hashtags, by intent. in hindsight from blogging to streams, I wonder now if this just a rethinking of paging a category - that tags have their own feeds is common, and that might present as next/previous links on a post - if you marked a tag as a thread does this just change the presentation to pull in the content of those adjacent posts as context.
@loppear @dreid my tag pages work for tracking topics over time pretty well - this one for example: https://simonwillison.net/tags/prompt-engineering/ - but it's not quite what I want from threads which are more about collecting sentency-long fragments of thoughts that evolve over time