Bike-sharing is becoming increasingly popular nowadays in every corner of the world. Vienna has one of the longest traditions of bike-sharing. The current ICT-based system, Citybike Wien, has been in service since 2003. The scheme is becoming popular and it is reported that ridership has been increasing rapidly in recent years. We have carried out a survey on user responses to this bike-sharing scheme in Vienna in spring of 2013. The results show that approximately 90% of Viennese people are aware of the bike-sharing scheme. The paper shows an overview of the Viennese bike-sharing scheme including the details of the survey results. After that, we discuss how to make bike-sharing systems more attractive to a wider range of the population and summarize suggestions for new implementation in other places.