Last.fm offers plug-ins for audio playback software (iTunes, Winamp, whatever) that report listening habits back to the Last.fm database -- artist, track title, album, play count. Last.fm artist pages get created automatically the first time someone out there in the world with one of these Last.fm plug-ins listens to a track by that artist. Anyone can edit any of the artist pages, for instance
http://www.last.fm/music/KOOL+SKULL/+wiki
reads:
"Nothing has been written here yet. Feel like writing a description for KOOL SKULL? Edit this page."
where "Edit this page" is clickable and will allow you to put in whatever content you want.Tags reflect what users have tagged your music with.
Your music isn't playable because you haven't uploaded your own tracks to Last.fm.
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