Every user has the option of "Following" other creative professionals whose work you would like to track. Your Activity Feed will display new work from the people you're following, as well as what they've appreciated. You can also opt in to receive email notifications when your followers upload new work in Notifications.
To follow, click the blue "follow" button underneath a profile image. You can access the list of people you follow by clicking the number next to "followers" when viewing your own profile.