Thing #6.

Out of the list of award-winning web 2.0 sites, my favorite would have to be http://www.last.fm/. I currently am an ITunes junkie, but I could see myself quickly becoming addicted to lastFM. In addition to being able to purchase and download music and videos, you can access a biography of the artist, view past concert events, and post journals related to that artist or the genre. I have found some artists on here that I have yet to find on Itunes. Very awesome, to say the least.