If it was not for me downloading a couple of songs, I would never have becomed interested in Ayu. I have since bought two of her albums, A best and I am, and glad I did. I will continue to add to my collection, as I believe you should only use filesharing to sample music that you otherwise would not have heard of. I have also downladed the odd single, not of Ayu's, but I am generally less interested in singles, I rarely buy them, I am interested in full albums, which I would not download.
My view anyway
