A few years ago we build a website that had a ranking algorithm somewhat similar to reddit. Upvoting a post would put in your favorites. Many users told us that

A few years ago we build a website that had a ranking algorithm somewhat similar to reddit. Upvoting a post would put in your favorites. Many users told us that oftentimes they wanted to upvotes a post without putting it in their favs, so we split the behavior and introduced a new fav button in addition to the upvote button. This worked out remarkably well. People voted more without fear of polluting their favs. The overal ranking of posts worked way better with that. I don't think that makes sense for twitter though, because "popular tweets" are not really substantial for the platform - and I actually like that about twitter. It's not so much a popularity contest as platforms are. So, without the need for a strong ranking, I'm not sure if more likes are actually a good outcome. What do we gain from this, other than making it harder to find your (truly) favorite tweets again?