This paper examines trends in second language (L2) communication strat
egy (CS) research to date. We give a comprehensive review of the relev
ant literature from the last two decades, with particular consideratio
n of the different ways in which CSs have been defined and of correspo
nding influences on the organization of strategy taxonomies. We first
outline the history of CS research and discuss problem-orientedness an
d consciousness as defining criteria for CSs. We then offer a comprehe
nsive list of strategic language devices and describe the major CS tax
onomies, noting key trends, with special attention to current and futu
re research orientations.