is SIOC too much in Content Management business?
[he] believe this [SIOC] started as a vocabulary for managing information associated with online forums, but it now has considerable overlap into the generic content management side of things.
My comment on the SIOC-dev mailinglist somehow has the same direction.
Beside the huge area of SIOC browser development and Uldis’ Ontology maintainance there needs to be a task to reduce redundancy with other Ontologies and add some usage recommendations to the SIOC Spec. Although the use of SKOS in combination with SIOC needs some more elaboration.
See Also: [SIOC TODO list]