I initially set this up because I needed the data for a personal project and decided that I might as well try to make it official/stable.  It is only streaming ticker data right now to reduce costs, but market depth can be turned on with a switch and public trades could be added in the future.

Is there any interest for a service like this?

http://docs.marketstem.apiary.io/

*Note: Apiary docs are designed for HTTP Rest API's, but I like their layout so I forced this streaming web socket api into it.