does user-generated content provide any predictive value for online music sales?
Vasant Dhar and Elaine Chang shows how blogs affect music sales.
…The Internet has enabled the era of user-generated content, potentially breaking the hegemony of traditional content generators as the primary sources of “legitimate” information. Prime examples of user-generated content are blogs and social networking sites, which allow easy publishing of and access to information…
http://archive.nyu.edu/bitstream/2451/23783/2/CEDER-07-06.pdf
