You are receiving this message from the old Collab Sakai email list, openforum.
You should already be subscribed, and should shortly receive an email from me to the [hidden email] list. If you don't receive that message either subscribe to the list manually or let me know if I can help.
Online Access and Subscribing
You can visit the group online directly . You can browse without logging in, and you can subscribe with a Google account. You can subscribe to the list with or without a Google account .
Also a couple of other notes
You can go to http://groups.apereo.org for general access to all your Apereo groups, and browse/subscribe to new lists there.
I've started a one page Confluence document to keep track of our migrations and provide an overview of the purposes of the lists. 
Old Email Archives
We plan to preserve the old email archives. That process is underway but may take a month or so to work out the details. Stay tuned.