I had to add exclamation marks. I just had to. Pandora was launched on 29th August 2005, unleashed to the public, after 5 years of testing. I'm listening to it now. What is it? Well their blurb says this and if you love music, including excellent sound quality and are open to hear music that you love as well as new music that you didn't even know you love, then try if for free here.
Snags and annoyances about this music player I will list tomorrow, after having my full 10 hours fee trial (or there abouts!).