Provide correct author attribution in multi-author feeds
If a feed contains authors who are not the "followed" entity, the article attribution is changed to that of the followed entity and the true author attribution provided on the feed Activity item is ignored or dropped.
This is an old statusnet issue related to Friendica federation that was never fixed and has now re-appeared now that hubzilla is able to act as a pubsubhubbub publisher. We partially "fixed" it in Friendica by providing a special feed just for statusnet which stripped out conversations; because the issue remained open over a period of years and our members tired of seeing posts attributed to the wrong person. The correct fix is to handle authors correctly in GNU-Social; either by ignoring unknown authors or presenting the true authors possibly along with an indication of how this post got into your stream (through following the post owner).
These incorrect attributions show up in 1) "wall-to-wall posts" where the GNU-social person is following the "wall owner" but not the post author. 2) Comments/likes and other responses to posts (hubzilla feeds provide complete conversations and streams). 3) public forums which are a form of wall-to-wall post - as one may be connected to the forum but not the individual contributor to the forum.
Example: GNU-social person is following "bob". Bob's feed contains
item1: Author Bob (appears correctly in GNU-social) reply to item1: Author Jim (comment is attributed to Bob in GNU-Social) item2: Author Fred (post is attributed to Bob in GNU-Social) reply to item2: Author Jim (comment is attributed to Bob in GNU-Social)