How can I contact Yahoo! concerning the Yahoo! group that I own, to have a change made in unrequested links?

Yahoo! puts in 2 links called "lewd" and "social interaction" into the email messages that are exchanged between members of my group. As the owner and moderator, I did not request these links. I want them removed. They do not allude to the function of the group, and in fact misrepresent the character and morality of the group. There does not seem to be a mechanism whereby I can eliminate these links. The name of the group is wiscomconnect, or the Wisconsin Mensa Connection. PLEASE see that these links are deleted, or provide a way for me to delete them. Thank you. Charles Evans, Moderator and owner of the group. My email address is wisdeplocsec@yahoo.com