In distributed scenarios the robustness of a reputation mechanism depends on the data available for computation. Especially in ad-hoc networks the amount of available data is restricted due to communication latency. In this paper we present a formal model for describing reputation systems with limited information and evaluate different data dissemination techniques for supporting the computation of reputation in dynamic multi-agent systems by simulation. Categories and Subject Descriptors G.3 [Probability and Statistics]: Experimental Design—Simulation Environment for Local Reputation Systems; I.6.4 [Simulation and Modeling]: Model Validation and Analysis—Data Dissemination Techniques General Terms Algorithms, Measurement, Experimentation Keywords Simulation, Reputation Systems, Data Dissemination, Formal Model