Tumblr used to have a feature (maybe still does?) where if a post got popular you could view a sort of web view of it-- showing you who most people were seeing your post and resharing it from. This was helpful when a post really blew up past your initial group of friends, because you'd have a better idea of where all the new people were coming from. Particularly, if you were getting a lot of harassment all of a sudden, it was usually a lot easier to figure out where it was coming from since you could spot a new big share and block that person (and their followers if necessary)
margot
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