For those of you that have been using WordPress elsewhere, there are a few key distinctions you need know about the Aurora server.
Aurora is a multisite installation of WordPress, modeled after WordPress.com. Each site has it's own tables, but they are in one database, and share the same library of plugins and themes.
Similar to plugins, Themes are also controlled at the network level. Custom themes are permitted, but must pass a Code Audit process before being allowed on production.