3 links
Yahoo! Clubs: Cherry Blossoms of Yuri
groups.yahoo.com
A mailing list and chat room. Open membership, archives available to the public.
Yahoo! Groups : ccsyaoi
groups.yahoo.com
A Yahoo group/mailing list of yaoi (male + male) and yuri (female + female) pairings, including Sakura and Tomoyo.
Yahoo! Groups : Sakura x Tomoyo
groups.yahoo.com
Mailing list. Open membership, unmoderated, archives for members only, email attachments permitted.