diambil dari Yahoo Messenger Help
QUOTE
How do I delete a contact?
To delete someone from your Messenger List:
1. Click the contact's name while pressing the "Control" key to highlight the contact, or right-click on it.
2. Choose "Delete."
3. Click the "Delete" confirmation
To delete someone by using the Contacts menu:
1. Click the contact's name in the Messenger List.
2. Go to the Contacts menu and select "Delete."
3. Click the "Delete" confirmation.
That person will not be notified of the removal from your list and will still be able to send you messages.
To send a message to a contact you deleted, go to the Conversation menu and select "New Conversation." Then type that person's Yahoo! Messenger ID in the "Messenger ID:" box.
Note: If you don't want to receive any messages from a contact you deleted, you should put that contact on your Ignore List.