I had one article Boosted that took off like a rocket and made me way more $ than probably everything else I've ever posted here put together. Soon after, I had another story Boosted, and it has done well, as in, better than a lot of my stories, but not all of 'em. So, as with all things Medium, it's a head-scratcher. But I confidently expect many meta articles to surface telling us all exactly how to get Boosted and make THIS much money!