Drawing general conclusions from empirical studies in software engineering carries risk: any software development process depends on a potentially large number of relevant contextual variables, which are often non-obvious to outsiders. While our results show that certain non-technical factors have a statistically significant effect on the review time and outcome of patch submissions, understanding and measuring the practical significance of the results remains challenging.Processes and developer behaviour around their contributions to the WebKit project depend on the organization, its culture, internal structure, settings, internal development cycles, time pressures, etc.