Surely Nichiren really do the best for the user. Not only for makes the readers happy with 'subscribe author' to know the newest story from their favorite author posted even they're not here for long, but also protecting the author. There is new feature called 'invitation only'. The author can choose who she/he wants to read their stories. Here this explanation he gave on his blog :

"You can now restrict access to your story to a list of users that you specify. I placed all the privacy options under the link of "+ Show More Privacy Options" located where you either create a new story or edit an existing foreword. Check the "Invitation Only" checkbox which will drop down a field for you to enter the list of usernames that can access your story. Make sure you separate each username with a comma and try not to have any spaces anywhere. If a username you enter is invalid, it will be ignored but the system will try to continue processing what's left on the list. Unfortunately, you're only limited to 25 usernames for now since it's a bit of a drain on the system but let me know if you're going to hit that limit and maybe I can work something out."

The only problem is... it's only let 25 people to access the story. So for author who kinda picky with their readers, they can use this with that limitation. And... should I do the same? keke XD I don't know who will miss my story if I did that >.<