(defcustom shimbun-mixi-group-alist nil
"*An alist of mixi shimbun group definition.
Each element looks like (NAME . URL) or (NAME . FUNCTION).
-NAME is a shimbun group name.
+NAME is a shimbun group name that you can name it as you like.
URL is the URL for mixi access point of the group. If URL is friend's, get
his/her diaries as article. If community's, get its BBSes. If diary's or
BBS's, get its comments.