The SWAML project fulfills a much-needed requirement for the Semantic Web: to be able to refer to semantic versions of email messages and their properties using a resource URI. I am delighted that the SWAML group have decided to use our SIOC vocabulary for their work, especially now as SIOC is beginning to achieve traction in terms of both metadata creation and applications that can make use of this metadata. By reusing the SIOC vocabulary for describing online discussions, SWAML allows users of SIOC to refer to email messages from other discussions taking place on forums, blogs, etc., so that distributed conversations can occur across these discussion media. Also, by providing email messages in SIOC format, SWAML are providing a rich source of data, namely mailing lists, for use in SIOC applications. I am also happy to see the SWAML creators developing their own applications that will work with SIOC data - the Buxon sioc:Forum visor is a great example of a program using SIOC message data that can come from one or many sources (e.g. from a “virtual forum” or container of posts from multiple sites and systems).