Well at least Boomshuffle and SNOCAP have the air of legitimacy about them vs several of the other playlist based sites I've run across. Especially a couple of them which allow users to upload their own music without any indication obvious mention of copyright ownership being required.
Doing a little more diggin indicates that Boomshuffle is using SNOCAP's Digital Registry or Catalog, so one would think that there is some sort of agreement to use the tracks. Clearly Boomshuffle is an interest widget that be added a variety of social network pages...
