A particular robust regression estimator has gained popularity among applied econometricians. We show that this estimator is inconsistent for the parameters of the conditional mean when the errors are skewed and heteroskedastic, and conclude that therefore its use cannot be generally recommended.

This fascinating and highly relevant book facilitates discussion on the difficult technical, legal and economic issues with respect to innovation, competition and welfare raised, through the span of more than a decade, by the US and EC Microsoft antitrust cases. It assesses their impact on the...