Tales of Drudgery and Boredom:
Tales of Drudgery and Boredom: (in Dutch) "Yow! Stijn! Iets voor u: XFML, eXchangeable Faceted Metadata Language. Enfin, denk ik toch. Korte introductie tot het dinges te vinden op xml.com."
Lutin's blog: (in French) "Ah ben voilà un truc qui me plait, mais je ne sais pas quoi en faire. Ou plutôt, j'ai tellement d'usages en tête que je ne saurais pas par où commencer si j'en avais les moyens. Je vais vous confier un secret: j'adore classer les informations. C'est pour ça que la référence de A frog in the valley me fait froncer les sourcils." (He's saying he doesn't know what to do with XFML because there are too many things you can do with it. I sympathize :)
David Galbraith: "I am less sure about XFML led by Peter Van Dijk, where the serialization of topics and facets seems to only allow 2 levels of hierarchy i.e. don't see how you can have subfacets of facets or subtopics of topics. Now it is true that you don't stricly need hierarchy beyond facet -> topics, but you get bloat, rather like flat file databases. Someone correct me if I am wrong." (he is wrong - XFML allows for unlimied depth in the hierarchies)