MOG is an interesting type of music streaming service, with a Pandora-style "radio" feature from which you can save playlists, link to your desktop players, and more. Their free plan is similarly unique: instead of just giving you free, ad-supported access to the site, you "earn" free music by listening, sharing with friends, making playlists, and using MOG's features. The more you play with MOG, the more free music you can earn. Their premium subscription plans are still there, with access to the desktop client, mobile apps, and more, but now those uninterested in paying can get access to MOG's awesome service. Hit the link to learn more.