Blogger Followers

At this weekends Latin American Bloggers Conference a question was asked of the Blogger Discussion Group,  What are the benefits of Followers; both for the follower and for the blog being followed?  Any ideas?

Many of us Follow blogs, and as bloggers we have Followers - When you sign in to your Blog application there is an area where Feeds of those blogs you follow come in and you can read the newest post text there.

What if you don't write blog, but read blogs, can you still Follow?   HMMMMMM???????