To add a signup form to your web site, insert this HTML to your page(s):

<form method="POST" action=""><p>
<input type="text"  name="Email" size="20"><br>
<input type="radio" name="Action" value="join-1111" checked>Subscribe 
<input type="radio" name="Action" value="leave-1111">Unsubscribe</p>
<input type="hidden" name="ThanksURL" value="2222">
<input type="submit" value="Do It">

1. Replace "1111" with the ID of your list.

2. Replace "2222" with the full URL of the landing page on your site which your subscribers will see after submitting the request.