I don’t have a BlackBerry, though I did a couple years ago (and having just come back from Japan, I literally thought the device was a sick joke). Anyway, the BBM Music service that’s rolling out and everyone is making fun of is quite interesting. Sure, you only get 50 songs a month; sure, you can only swap out 25 of those songs each month; sure, it’s spendy at $5 (er. $4.99)… but you get to listen to the music of all your friends on the service. I thought only Facebook could come up with this kind of forced virality. They have it all wrong though – all carrot and no stick.