Unfortunatelly time and time again exhibitors are contacted by dubious companies wanting to include them in so-called Trade Fair and Exhibitors’ Directories, such as FAIR GUIDE, International Fairs Directory or, to take a more topical example, EXPO-GUIDE. In most cases these are publishing companies who have not been authorised by the Trade Fair Organiser and who change for insertions in various directories after giving the impression that their services are free of charge.