Been using spotify for two, three weeks...it's great for checking out new music especially if you are old school and like to hear a whole album. Have not used it on my iphone but it is a great alternative to Pandora @ work
im waiting for an invite but as i was looking at it on a friends computer i saw i can post straight from the program what im listening to on facebook and twitter and the sync without being CONNECTED option. that's awesome, huh?
Well actually, you have to connect the Spotify with your Facebook or Twitter account. You can see all your FB friends playlists and most listened to artists. Spotify is great! :)