The White Stripes, if they were behind the mp3's released on file sharing networks of thier new album, did something comepletely different! There were three tracks if I remember correctly, and they were the just first minute or so of the song, looped for the typical length of a song. So you got to hear what the track sounded like, but didn't get the song.

Seeing that they didn't release the new album on Emusic, and I was just trying to figure out if I wanted to buy it or not (as I get most of my music off of emusic now, or at used CD shops, due to it being so much cheaper than a full-price CD), this worked out well, for after hearing these 'promo' tracks (which I just assumed had been downloaded from a mag like Rolling Stone or something, and then looped and posted as full songs by someone trying to look cool- not from the White Stripes directly) I bought the CD, full-price, the next day.