This document will help us list out how we can create a WordPress multiste network - this will help us have many freespaces in many cities (example : sf.freespace.io, oaklanda.freespace.io, miami.freespace.io)
Our current site is hosted on WP Engine.
We would like to setup the domain to be a wildcard domain, so every new site will have its own freespace.io domain (*.freespace.io/) http://support.wpengine.com/how-to-add-new-sites-with-different-domains-in-wordpress-multisite/
We need : new site registration moderation (approval process for new cities)