This page is perhaps more important than the wiki's "Main" page it serves. Here will be found discussion about the content of that page, why it's there, how and when it changes.
Resources for improving the home page
See paper on motivations for using Wikipedia. Relevance here? http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.457.1402&rep=rep1&type=pdf