Abstract: The present invention relates to a system and a method allowing users to send text messages to a processing station in electronic form and get back lists of other messages semantically matching theirs. On the logical side it consists of an artificial language (meant to be read or written, not spoken), its translations to various natural languages, a message structure and a message comparison mechanism. On the physical side it includes processing stations, communication channels and web interfaces. The artificial language consists of a domain specific vocabulary constructed according to well-defined rules and a grammar that enforces a tree-like structure on text. Automatic translation between the internal representation of the artificial language and various natural languages is done through online dictionaries. Messages essentially consist of free text fields containing only words picked up from the dictionaries. Semantic comparison of text fields is done through subtree matching.