Tagging at Amazon and LibraryThing

Tim at LibraryThing has a long post, an article would be a better description, comparing tagging at Amazon and LibraryThing. When tags work and when they don't: Amazon and LibraryThing draws some conclusions based on the differences in the number of tags applied.

This is an extensive post, revealing the results of a statistical comparison between Amazon and LibraryThing tags, and exploring why tagging has turned out relatively poorly for Amazon. I end by making concrete recommendations for ecommerce sites interested in making tagging work.

Tagging