Another interesting thing that @Flipboard is doing is creating a hierarchical topic space in the #fediverse by concatenating topics into user names.
In plain speak: more than one user handle for the same account but different topics.
Example: there is @Semafor, @semafor@flipboard.social and @politics@flipboard.social, probably more. Not sure yet exactly how the convention works, but it's needed just like blogs often have sub-RSS feeds in lower-level topic categories.
