Followers are the people who are connected to your website.
You have the ability to contact these followers as well as edit and update their status.
Everyone in your database is referred to as a follower but at any given moment in time, they may have an additional segment/classification and be referred to as an active member, an expired member or never-been a member. These segments allow you to effectively send out marketing materials to the correct and most relevant segments in real time to create conversions and increase revenue.