I'm interested to see how the US consumer reacts to Spotify. Streaming music isn't new, and its had very little uptick as consumer behavior is mostly given toward a 5 record a year purchase (average music spend per US 18-65 is 50 bucks there a bouts).

120 is a big jump for the average person.

Also Spotify US will not be allowing you to "live" as a free user for long.

I have other issues with Spotify, both good and bad, but that is its own blog post and nothing I submit to HN gets up voted anyhow :)