This! My dream is to build an open source app that gathers all these personal ratings (from Netflix to Pandora to GoodReads to restaurants) and puts it back on

This! My dream is to build an open source app that gathers all these personal ratings (from Netflix to Pandora to GoodReads to restaurants) and puts it back on where it belongs: the users hand!! Unfortunately finding the time to work on this will be tricky.. Anyone knows if that's a thing already?