Producing a good quality scientific publication depends on the engagement of highly qualified academics in the article evaluation process. The editors of RBFin would like to thank the 64 individuals below, who performed voluntary evaluations of articles in 2011. Thirteen of them work in universities outside Brazil. According to RBFin policy, each reviewer may perform no more than one review per year, with the exception of follow-up reviews of the same article. We show the number of papers reviewed when this limit was exceeded.