RSDNET: a web-based collaborative framework for building multilingual semantic networks. We present a system (RSDNET) that allows non-expert Web users to contribute towards building a multilingual lexical resource. Our study focuses on the Romanian-English language pair, and the target resource is a Romanian WordNet stongly connected to the English WordNet. We use a bilingual dictionary, a monolingual definition dictionary and documents on the Web to build synsets, attach them a gloss, and provide some examples. The results of our semi-automatic acquisition system are judged by two human judges, and they are compared to automatic approaches to building a Romanian WordNet.