User blog comment:SEOkitten/Search Suggest, Trends, and Content Coverage/@comment-168424-20150917173824/@comment-26321732-20150917174824

Yes! That is one of the planned topics, and I just updated the existing help page to reflect current best practices:

http://community.wikia.com/wiki/Help:Description

Keep in mind that keywords and phrases used in the meta description are no longer factored into search algorithms, but informative descriptions can drive click through rate.