Different cultures and languages make web-based communication among the members of international research projects often complex. Focussing on frequently neglected internal communication, this cumulative PhD thesis seeks to present methods from applied LSP research on a concrete case study – a research project from the area of Public Health. Aiming to establish a win-win situation between systematic approaches and communication optimisation, the case study is also used to verify known models. Systematic approaches can be beneficial for enhancing project communication, if they are part of a circle of theoria cum praxi. The thesis closes with appeals to linguists, project leaders and funding agencies for improving project communication as well as the involvement of applied linguistics in future.