This problem is solved with HN headlines by, roughly, making older upvotes worth exponentially less. Anyone want to comment on the merits and drawbacks of appl

This problem is solved with HN headlines by, roughly, making older upvotes worth exponentially less. Anyone want to comment on the merits and drawbacks of applying a similar solution to an app store, and any ideas for mitigating the problems? Anyone want to build a startup: An Android app store with HN-inspired ranking system?