I subscribed to the “email@example.com” mailing list a few days ago. I lucked out, because I found Joshua Tauber and his rdf:about site. The Quick intro and the RDF in Depth are two of the best articles I have read on RDF so far.
There seems to be a lot of activity and announcements related to the Semantic Web the past few days. I get most of my information by tracking Planet RDF.