To remove a public profile, go to the profile edit page, click "Edit" beside each profile, and delete the information you do not want stored in the database.

Sometimes personal information is displayed when you engage in certain activities on Yahoo!. For example, your Yahoo! ID or alias will be publicly displayed if you use Yahoo! Chat or Message Boards or when you choose to participate in a Yahoo! Auction, among other activities. Remember that if you post personally identifiable information online that is accessible to the public, you may receive unsolicited messages from other parties in return.