Most social media has no concept of I already read this. When I read something with a bunch of comments and come back latter there isn't a good way to skip past the things I've already see to what is new (and of course go back if I don't remember the context). Because of this I don't want you to bump something old - I read it way back, and I no longer even have an idea of where I last read...

Traditional forms are linear. I’m describing something more branching, where a bump starts a new branch off a trunk, but still nested under the original post.

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