Interesting to see that Stack Overflow are rolling out a more extensive curated folksonomy system. The linked blog post talks about how a pure folksonomy (i.e. freeform tagging) reached a point of unwieldiness, and they’re now allowing the community to merge tags/mark them as synonyms.
This seems quite similar to the OTW’s Archive Of Our Own “Tag Wrangling” project for fannish metadata (fandoms, characters, etc).
Does anyone know of any other curated folksonomies out there? That is, a freeform tagging system with a layer of curation over the top to even out some of the stranger quirks of a purely anarchic system.