One thing which concerned us for some time in Newcastle was the ‘interface’ or possible relationships for users and staff between contextualities built by folksonomy and those more formal structures built by domain experts such as curators. We’re not at the answers stage yet I think, apart from an agreement that both approaches are valuable and can complement each other. Maybe its simplistic but I like to see the ‘formal’ side acting as semantic glue sticking folksonomies together.
Things are moving along elsewhere. DBin looks interesting: http://dbin.org/ RDF semantic tagging of discussions by domain experts. Danny Ayres (Raw) has been blogging about SWAP 2006 in Pisa and this among other things, raised his interest.