Board Thread:General Wiki Discussion/@comment-24055524-20131226203557/@comment-11333115-20131226204548

The application uses asynchronous xmlhttp requests to query the MediaWiki api to gather members of the category when you click expand. It then uses another request to get the page id to which it sends to the Wikia api which returns the page content. This is then written to the text container.

TL;DR yes you do.