Jon Husband is calling MIXXs social objects. The term Social Object comes from Hugh MacLeod. It's such a clear concept, I was surprised that I hadn't heard it before.

Hugh has an interesting 15 point list of thoughts and principles of Social Objects. The last point is I believe Social Objects are the future of marketing. Hopefully he is right as that is the intent around Mixx Maker, and key to any business model around it.

So, after 1 week Mixx Maker has:
402 users (17% Daily Active)
489 Mixxs created
285 Active Mixxs

And Adonomics says Mixx is worth: $383.00

Other links on MIXX:

Kirsten Starcher thinks Mixx is "an addictive little app - I had to force myself to go to bed the other night when I was having too much fun putting together a Mixx of music that I was finding particularily resonant (starting with "Go Slowly" by Radiohead). There'll be more where that came from."
All Face Book says "there are a ton of crappy apps" but, " I found a very cool app called Mix Maker."

Sweet stuff!