A successful software project is the result of a complex process involving, above all, people. Developers are the key factors for the success of a software development process and the Agile philosophy is developer-centred. Developers are not merely executors of tasks, but actually the protagonists and core of the whole development process. This paper aims to investigate social aspects among developers working together and the appeal of a software project developed with the support of Agile tools such as Agile boards. We studied 14 open source software projects developed using the Agile board of the JIRA repository. We analysed all the comments committed by the developers involved in the projects and we studied whether the politeness of the comments affected the number of developers involved over the years and the time required to fix any given issue. Our results show that the level of politeness in the communication process among developers does have an effect on the time required to fix issues and, in the majority of the analysed projects, it has a positive correlation with attractiveness of the project to both active and potential developers. Themore polite developers were, the less time it took to fix an issue, and, in the majority of the analysed cases, the more the developers wanted to be part of project, the more they were willing to continue working on the project over time.