I think the algorithm changed dramatically a couple of years ago to compel riders to travel further and perform a more useful "balancing" service to acquire points. Five years ago, I used to be able to move five bikes across the street to another station and collect a few quick points ... and then move them back again after 15 minutes passed and the old algorithm now saw that the first station was in need of bikes. These sorts of arbitrages have been eliminated, and now you more or less have to travel from an oversupplied neighborhood to an undersupplied neighborhood. But it is annoying that when a station seems to be malfunctioning and not releasing bikes at all, it will sometimes show up on the angels map as a good place to pick up a bike. This has certainly thrown a wrench into some of the too-good-to-be-true points-collecting routes I have devised!