This is insane:
All members please note.
Yahoo has made the decision to no longer allow users to upload content to the Yahoo Groups site. Beginning October 21, you won't be able to upload any more content to the site, and as of December 14 all previously posted content on the site will be permanently removed. You'll have until that date to save anything you've uploaded.
https://help.yahoo.com/kb/groups/SLN31010.html?impressions=true
PLEASE COPY ANYTHING YOU NEED OFF THIS SITE NOW !