If you want to join an e-zine or discussion group list, you 'subscribe' This adds your e-mail address to a mailing list Subscribing is usually free When you want to leave the list, you 'unsubscribe'
To join a discussion group, interest group, listserv list, or mailing list You use this term when writing commands to join such a group and to list a Usenet newsgroup on your newsreader
pay (an amount of money) as a contribution to a charity or service, especially at regular intervals; "I pledged $10 a month to my favorite radio station"
If you subscribe to an online newsgroup or service, you send a message saying that you wish to receive it or belong to it. Usenet is a collection of discussion groups, known as newsgroups, to which anybody can subscribe