Organizing and implementing telecollaboration projects in foreign language curricula is not an easy endeavour (Belz & Thorne, 2006; Guth & Helm, 2010), as pedagogical, organizational and technical issues have to be addressed before cross-cultural interaction sessions can be carried out (O'Dowd & Ritter, 2006; O'Dowd, 2011). These issues make many teaching practitioners reluctant to try to integrate telecollaboration in their teaching, as they are more aware of the burden such initiatives might impose than of the benefits they might have for language learners. Within the European project NIFLAR we have tried to study the added value that integrating synchronous collaboration projects through video-web communication or "Second Life" might have in language learning. The study presented in this paper measures the oral communicative growth of language students, who were allocated at random to one of three research conditions: (1) the VC experimental group carried out interactions with native peers through video-web communication; (2) the SL experimental group carried out the same tasks with native peers in "Second Life" and (3) the control group performed the tasks face to face with classroom peers and had no opportunity to interact with native experts. Communicative growth was measured by comparing oral pre- and post-tests across conditions. Results show significant differences, the experimental groups outperforming the control group.