Orange Fr is currently running a promotion for Windows Phone and is offering 5 paid apps (max cost € 14.99 per application) with every new purchase of a Nokia Lumia 800. This offer is valid from from January 12, 2012 to February 8, 2012.
How to Download the 5 apps for free from your new Windows Phone on Orange FR?
This offer is not valid for apps purchased through credit cards. So you must select "Orange bill" as a mode of payment for your first 5 apps. You can browse the Windows Marketplace for apps.
More info about the Lumia 800 @ Orange France