pandora.com is the only webapp (apart from google and reddit) that has profoundly affected how I spend my free time. <p>I feel a rush of adrenaline every time I discover a new artist in my areas of interest (some rather obscure ones: salsamuffin, anyone?) <p>The concept is so brilliant and offers so much potential, it's scary. Especially when pandora.com starts using AI pattern recognition/clustering instead of their 'human experts'.
Tim Westergen and his company Pandora are simply amazing, surviving failures of several business models, lawsuits, increasing music royalty fees, etc. Its pure example of perseverance, infinite passion and enthusiasm.