@BeAware @Sibshops @Flipboard topics are not followable in the fediverse. Some of our users (e.g. publishers and creators) are followable and their magazines. We do offer local news publishers like @SpotlightPA and @PennLivedotcom. The challenge with topics is that they are algorithmic from many non-federated sources so a follow action doesn't make much sense (because the items can change all the time and disappear, re-appear ... it is not follow timeline based). We've had some ideas on how to make it more direct, but not yet ventured down that path. Great question!