In this paper, we inquire about some of the ways in which the community around Simple Wikipedia - an offspring of Wikipedia, the notorious free online encyclopedia - manages the on-line collaborative production of reliable knowledge. We focus on how it keeps its collection of articles 'simple' and easy to read. We find that the labeling of pages as 'unsimple' by core members of the communities plays a significant but seemingly insufficient role. We suggest that the nature of this mode of decentralized knowledge production and the structure of Wiki-technology might call for the implementation of an editorial companion to the community.