A few years back I created a data set of social tags from Last.fm. RJ at Last.fm graciously gave permission for me to distribute the dataset for research use. I hosted the dataset on the media server at Sun Labs. However, with the Oracle acquisition, the media server is no longer serving up the data, so I thought I would post the data elsewhere.
The dataset is now available for download here: Lastfm-ArtistTags2007
Here are the details as told in the README file:
The LastFM-ArtistTags2007 Data set Version 1.0 June 2008 What is this? This is a set of artist tag data collected from Last.fm using the Audioscrobbler webservice during the spring of 2007. The data consists of the raw tag counts for the 100 most frequently occuring tags that Last.fm listeners have applied to over 20,000 artists. An undocumented (and deprecated) option of the audioscrobbler web service was used to bypass the Last.fm normalization of tag counts. This data set provides raw tag counts. Data Format: The data is formatted one entry per line as follows: musicbrainz-artist-id<sep>artist-name<sep>tag-name<sep>raw-tag-count Example: 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>american<sep>14 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>animals<sep>5 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>art punk<sep>21 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>art rock<sep>18 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>atmospheric<sep>4 11eabe0c-2638-4808-92f9-1dbd9c453429<sep>Deerhoof<sep>avantgarde<sep>3 Data Statistics: Total Lines: 952810 Unique Artists: 20907 Unique Tags: 100784 Total Tags: 7178442 Filtering: Some minor filtering has been applied to the tag data. Last.fm will report tag with counts of zero or less on occasion. These tags have been removed. Artists with no tags have not been included in this data set. Of the nearly quarter million artists that were inspected, 20,907 artists had 1 or more tags. Files: ArtistTags.dat - the tag data README.txt - this file artists.txt - artists ordered by tag count tags.txt - tags ordered by tag count License: The data in LastFM-ArtistTags2007 is distributed with permission of Last.fm. The data is made available for non-commercial use only under the Creative Commons Attribution-NonCommercial-ShareAlike UK License. Those interested in using the data or web services in a commercial context should contact partners at last dot fm. For more information see http://www.audioscrobbler.net/data/ Acknowledgements: Thanks to Last.fm for providing the access to this tag data via their web services Contact: This data was collected, filtered and by Paul Lamere of The Echo Nest. Send questions or comments to Paul.Lamere@gmail.com