L-PLUS is a list for lesbians 50 and over (think of the Roman numeral L).
To subscribe, send the message:
SUBSCRIBE L-PLUS Firstname Lastname <email_address>
to MAJORDOMO@VECTOR.CASTI.COM. Be sure to use pointed brackets around your email address. If you have a signature file, be sure to add the word END on a line by itself after the subscription request line.