CD 2.0?

Radiohead sold an incredible 1,2 million ‘copies’ of their new ‘cd’ ‘In Rainbows’ in only one week. That’s more then the first week sales of their 3 previous releases together. The fans paid an average ‘voluntary’ price of 8$ per download. Some joy riders paid zip, some hard core nuts donated up to 50$. Knowing that a ‘normal’ artist makes 1 to maximum 2$ per CD, Radiohead made 4 times more your average Madonna or Justin. Respect!
So far, so good: the CD is dead and buried. Tell me something new. What makes this case really interesting was last week’s Top Tracks List on Last.fm: the 10 tracks from ‘In Rainbows’ occupies the entire top 10. And Radiohead was the number 1 artist with more ‘plays’ then the rest of the top 5 together. Last.fm-ers used their favourite web2.0 network to listen before buying, to share after buying, to exchange views and reviews. So the Remaining Question is not so much ‘What explains the sales success of 'In Rainbows'?’ but ‘Why does this revolutionary release creates such a revolutionary web2.0 fuzz?’. Is it because the Last.fm Generation finally found a group to embrace as soul mates? Is it gratitude towards Radiohead for offering them the Ultimate Way of taking revenge on the greedy record companies?