Websites such as Wikipedia or Stack Exchange have a political system where users can gain priviledges, and once they have gained those priviledges, they can edit or delete your content.
In OurBigBook Web, unless you explicitly give other users permission to do so, only admins of the website can ever delete any content, and that will only ever be done if:
Admins will always be a small number of people, either employed by, or highly trusted by OurBigBook Project leaders. They are not community elected. Their actions may be reversed at anytime by the OurBigBook Project leadership.