From Pravir's post at
http://blog.schema.org/2011/10/w3c-web-schemas-group-is-our-new-publi...
W3C "Web Schemas" group is our new public feedback forum
[[
Our Discussion Group will be moving to the W3C forum, which will use
the public-voc...@w3.org mailing list.
The Schema.org Google Group will not be completely shut down, however
we do encourage all discussion of vocabulary, schema and deployment
practicalities to move to public-voc...@w3.org mailing list. These are
also linked from the Documents page.

This comes out of a plan for closer collaboration between Schema.org
and other related efforts. The Web standards organization W3C has
created two related task forces of its Semantic Web Interest Group
that are relevant for Schema.org. One is devoted to the technicalities
of syntax and other one, "Web Schemas" is for vocabulary discussions.
We have decided to adopt this forum as a new home for Schema.org
feedback, since it provides a natural connection point to related
efforts from other groups and communities.

The W3C group is open to all, and will have a Wiki and issue tracker
to help organize feedback; not only for Schema.org but for other Web
Schemas who are interested to collaborate. We hope this will give rise
to collaborations, mappings and shared modeling styles.

Looking forward to greater opportunities for collaboration.
]]

Here are the practical details:

Public mail archives: http://lists.w3.org/Archives/Public/public-vocabs/
Welcome message:
http://lists.w3.org/Archives/Public/public-vocabs/2011Sep/0001.html
Charter for W3C group: http://www.w3.org/2001/sw/interest/webschema.html
Wiki: http://www.w3.org/wiki/WebSchemas

It would be great not to split discussion across two lists for long,
so please subscribe now to the new list. You can do this by sending a
mail:

*** To subscribe, send a message to public-vocabs-requ...@w3.org with
Subject: subscribe (see lists.w3.org for more details). ***

If you are new to the W3C community, you will need to go through the
archive approval process before your posts show up in the archives.
(http://www.w3.org/2002/09/aa/)

To edit the W3C Wiki, you will need an account - these are available
for all: http://www.w3.org/Help/Account/Request/Public

If you have any questions or practical difficulties (email list etc.)
about the W3C group please don't hesitate to ask me.

cheers,

Dan