Alright, this moring the URLs were made active and I committed to SquareSpace as the host site.
The addresses that will get you here are:
www.bookmarkcollectorsvirtualconvention.com
www.bookmarkcollectorsconvention.com
www.bookmarkconvention.com
www.bmcvc.com
The last (and smallest) one is the official name of the site and will appear at the top of your browser, but the other addresses will be forwarded to this one.