You can integrate a form into your Facebook page, allowing readers to subscribe to a specific contact list.
Access your contact list by clicking on the Contact List tab and click on Manage Forms on the left hand menu.
Here you will find the Facebook Sign Up Form option, which will allow you to grab a code that you can insert into your Facebook page.
Keep this tab open because you will need this code later.
To Install your code on Facebook
First of all you need a Facebook Page. If you don't have one, click here to create one.
Once you have created your page, install the Facebook App called "Static HTML: iFrame Tab" by clicking here. On the application homepage, click on the "Install Page Tab" button. Select your Facebook Page in the dropdown menu and click "Add Page Tab".
Paste the code you retrieved earlier into the box in the middle of the page.
Scroll down to the "Tab Name" area and change the text to "Newsletter Signup".