Taylor Swift pulled all her songs from Spotify the other day. The reason being that she feels music streaming services are still a big experiment and her music deserves a platform that values her work more.
Although I personally don't mind Taylor Swift pulling her songs, Spotify itself does. They've written a lengthy reply and shared a few pretty cool statistics.
During its existence Spotify has paid over two billion Dollars (that's $2,000,000,000) to artists. They also mention that there are over 50 million active Spotify users, of which 12.5 million are subscribers. In the rest of the article Spotify's CEO Daniel Ek debunks a few persistent myths about music streaming services. Definitely worth a read.