Nesting social posts under blog posts in Artemis

In Grouping link posts in a web reader, I described a feature in Artemis to show when someone whose website you are following has bookmarked a post by an author you also follow. The motivation for this feature was to reduce clutter in a user’s reader by grouping shares of a post under the original post. Whether an entry should be nested was determined by the URL of an entry in a feed, which meant that the feature triggered only for people who publish bookmarks feeds that link directly to oth...