Spotify, the popular music streaming service, finally launches in the U.S. today. If you never heard of Spotify, the service made its debut in Europe in late 2008, and offers streaming of selected music from a range of major and independent record labels, including Sony, EMI, Warner Music Group, and Universal. Spotify quickly became extremely popular, as the service managed to attract over ten million users in no time, in countries such as Finland, France, the Netherlands, Norway, Spain, Sweden, United Kingdom, and now the United States. Unlike iTunes or Amazon, Spotify’s business model is not about selling songs – the service is designed to stream the content of your choice ‘on-the-fly’ instead. Via the Spotify app (available for PC, Mac, and iPhone), you can browse songs, create your own playlists, share them with friends, favorite songs, and so on. As you must have already figured out, the service requires an internet connection. iPhone app was made available to U.S. customers earlier today, and is free. Similarly to Pandora, the service is supported by ads, and if those pesky ads annoy you, you can always become a premium user, for under $10 per month.