Most empirical studies of peer production have focused on the final products of these efforts (such as software in Free/Open Source projects), but there are also many other knowledge artifacts that improve the effectiveness of the project. This paper presents a study of an intermediate work product, or informalism, used in a Free/Open Source Software project, GNUe. A digest-like artifact called the Kernel Cousin (KC) was used extensively in the project. These KCs allowed critical coordination and memory, but at the cost of considerable effort. The paper presents two examples of the KCs' use in the project as well as an analysis of their benefits and costs.