Isn't Social Metadata Incredibly relevant?
This year's ISMIR will be no different. There's lots of interesting research around tags and music information retrieval - researchers are looking at filling out the tag cloud (autotagging and tagging games), extracting information from tags (latent semantic methods), cleaning up tags, using tags to assist in training of classifiers, using tags for recommendation, discovery and exploration. There seems to be no end to the interesting things we can do with social tags.
At this year's ISMIR, Elias Pampalk and I will be presenting a tutorial on social tags and music. In the tutorial we will be looking at the state-of-the-art in commercial and research systems that use social tags. I'm rather excited about the tutorial - the topic is just so fascinating to me - and it is great to work with Elias especially with his deep knowledge of the last.fm tagging data (and his new found statistical expertise).
If you are attending ISMIR this year and have an interest in social tags, consider signing up for the tutorial.