There's actually tons of differences between the two. Plug.dj is international and provides an optional real-time chat translation feature. You can also play videos too, which is nice because you aren't just limited to audio only. You can make playlists and import music/video from SoundCloud and Youtube. Also, each avatar has its own dance and each room has DJ booth features. Oh ANDD when a room reaches a certain amount of users, you can unlock a strobe-light feature! Can't find any of this stuff anywhere else =) It's pretty awesome.