The follow link is for one to stay on top of new posts right after they are posted. This widget doesn't go to you email (some folks prefer that it doesn't), but allows you to read it on Google Reader, or on iGoogle or in many other places that you control. When you follow, It tells the site that you are one of us, therefore allows you to read and post commnets without any hustles or extra clicking of any kind. I recommend it highly. Also from there, when people click on your Photo, Blogspot brings them to your site--if you have one-- and like that you'll be getting your own subscriptions as well. It's a very nice setup as it is also very simple and convenient. Try it now, it won't bite you.