> At the Premier partner level, creators will have the opportunity to make money from their tracks through advertising.[...] Every time you see or hear an ad, an artist gets paid.
http://blog.soundcloud.com/2014/08/21/introducing-on-soundcl...
This is huge: Soundcloud has a way better connection to artists/labels than Spotify or Rdio -- which means that the best content will be on Soundlcoud first.
Given that users follow the content, I think it is safe to suggest that Soundcloud will be bigger than Spotify in a few years.