Google Groups:

If you want to read the webpages rather than getting email per your request, then the moderators of the group can set your subscription type as "No Email". When we set you to "NO EMAIL", that means that if you want to read the groups messages, you will need to visit the group's home page to view new messages.

Visit this group's home page on the google website by using this URL:
http://groups.google.com/group/abtrfriends?hl=en

To join or view this group on the web, or edit your subscription, you will need to create a Google Account by going to here

You can unsubscribe from this group by going here here