Do Autoresponders work?

There is a reason you see subscribe boxes on all of the “BIG” shots blogs.
Having people subscribe is a way to keep them up to date with new content.  It puts them in your funnel.
 
You can customize your autoresponder in a variety of ways.

One way

Set you emails to be sent everytime you create a new post.
You can also set up a series of emails that will be sent to your subscribers in whatever order you want them to go out.  For example, every 2 weeks, once a week, every 4 days… However you want.

Most people make the majority of their affiliate profits through the emails sent by their autoresponder.  It usually takes 5-7 times for someone to see a product before they decide to purchase.
 
Using the 4-1 approach is a great way for sending emails through your auto responder.
The 4-1 Approach is 4 informational emails to every one affiliate promotion email.  For more details click the 4-1 approach link.
 
The most important reason for autoresponders is to keep your visitors coming back.  It gives people a reason to come back to your site to check out new post.