How to quit the Twins List

Send an email message to listproc@usc.edu (If your browser allows you to send email, just click on the link.)
Leave the subject line blank.
In the body, write:
signoff twins-L

You should get a confirmation message within a few minutes. If not, did you:

Send the message to listproc@usc.edu? Don't send it to the main list address.
Send the message from the account you're subscribed from? It won't work if you use a different account.
Include the list name, twins-L?