I logged in to Spotify and saw the ad for the iPad app. I tried to install the app, only to find that it won't install/run on my 1st gen iPad with iOS5.
Why the restriction?
I can't install a newer OS and I'm certainly not going to buy a new iPad just to run a free app.
I couldn't even leave a review on iTunes mentioning this issue, because iTunes won't allow reviews to be posted unless the app is installed.