Data can change the world, if it is made used and useful. How to make data used by thousands? Allow to re-use it, and for free! INTEROPERABILITY. How do we make open data useful? By actually using it :), and iterate. MAKE.OPENDATA.CH 
& other open hackdays. One leap for x-thousands
: TRANSPORT.OPENDATA.CH. What open data events are next in 2015? What’s the future? We change the world. DATA QUALITY. My approach, I advocate: Five hearts promotion scheme of Open Data. Join OPENDATA.CH. Request: open data. Make open data used and useful. Apply ethics, 
reflect on change.