fraying just to the first episode of fertile medium and really enjoying it!

Question: what is the context if you reply to something someone’s said on your own site, as a self–hosted reply (e.g. this one of mine, cross-posted here)?

In an environment where everyone hosts their own comments, what happens to the their turf/own turf thing? Or is it more of a question of how the user agent in use displays interlinking content (and what blocking tools it offers)?