These slides were used in the Open Data for Open Cities participatory workshop. The aim was to identify and collect the current barriers, ideas, and suggestions of data consumers of open data project in Valencia City. This workshop is part of Initiative CityData 3.0 of the GeoC project which aim is to design a strategy to assess the real impact and reuse level of available open data in cities. If you have some questions, suggestions or comments do not hesitate to contact me: benitezm@uji.es