We just pushed a new feature set to CC Network; most of these are OpenID related, and I'll try to write more in depth about the interesting ones in the near future:

• You can now elect to "always trust" an OpenID site
• Commoner (the code behind the CC Network) now supports the Simple Registration extension to OpenID
• We have preliminary (experimental) support for Verisign's OpenID Seatbelt extension
• We've added a link that to "add another" after you register a work
• You can now select a full size or "thin" network badge (similar to the license badges)
• We've added a link in the head of profile and work list pages that points to the RDF/XML file; we still consider RDFa the primary vehicle but this may help others ingest the data

Other things you think we should add? Let us know -- create an issue or email issues@creativecommons.org.