Using it on the recent public feed of data from JCDecaux on the latest iteration of my project [1], hope I am referencing the license accordingly! On the source I am referencing the link to the JCDecaux website, but could to etalab easily :)

[1]: http://staging.citybik.es/networks/velib

EDIT: Forgot to add, I should also release my data under a license and have contemplated using the "Open Licence", but I am not yet sure on what will suit best.