In this paper we present research into obtaining complete FAQs that provide users with satisfactory information. To achieve that we join FAQ technology with the emerging wiki technology to obtain a tool we call WikiFAQ which includes all the basics elements of a FAQ combined with the properties of wikis, and in which we include a set of Knowledge Contribution Methods (KCM) based on bidding and auctioning systems, and a reward mechanism (RM) based on points as in trust and reputation systems. We use Citizen Information Services (CIS) in local governments as an application domain for WikiFAQ because they are a rich source of diverse and dispersed users with direct and relevant experience.