i've found an interesting article regarding app_to_user notifications to all your application users... but coded in PHP.
In this article, the developer used this functions to initialize the Faceboiok Batch API
$batch_count = 0;
Do you know to to do the same thing with the Facebook Developer ToolKit in Asp.Net.
The goal is simple, i have to notify 500000 users 2 or 3 times by months and i do not know how.
Thanks for Help !