http://www.360naijatech.com/2015/02/blogger-new-policy-on-adult-content.html

Google announced that - if your blog was created before March 23, 2015, and contains content that violates our new policy, you have a few options for changing your blog before the new policy starts:

= Remove sexually explicit or graphic nude images or video from your blog
= Mark your blog as private

If your existing blog does have sexually explicit or graphic nude images or video, your blog will be made private after March 23, 2015. No content will be deleted, but private content can only be seen by the owner or admins of the blog and the people who the owner has shared the blog with.

If you’d rather take your blog down altogether, you can export your blog as a .xml file or archive your blog's text and images using Google Takeout.