merchr is simply a database of artists and their merch store links. Everyone uses different websites to sell their merchandise, and there isn't a central repository of those links. We started with the top 50 artists from Echo Nest, and we want this database to be updated by the community.
We create a short URL that gives an artist analytics about their merch store traffic.
Eventually, we want to build an API to surface this data with a given Echo Nest, Soundcloud, Rdio, 7digital, or Spotify ID.