All the things you have listed here are very possible. I haven't dealt too much with custom Open Graph actions but I'll get you started with some information taken from the Facebook Documentation on the Open Graph Protocol.
There is no reference to whether is it "human verified" there might be some sort of initial filtering of obscenities or some other filter of "saved words" but ultimately I would imagine there is a good possibility that it is reviewed manually (at least to some stage).
Another reason I chose to answer was that little "yet" (in brackets).
The official Facebook Documentation contains a wealth of information about developing on and for Facebook's platform.
The Facebook Blog that contains lots of tutorials about basic and advanced techniques.
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您在这里列出的所有事情都是很有可能的。我没有过多讨论自定义 Open Graph 操作，但我将帮助您从 有关开放图谱协议的 Facebook 文档。
以下是自定义操作审批流程的一些指南：
https://developers.facebook.com/docs/opengraph/opengraph-approval/
没有提及是否“经过人工验证”，可能会对淫秽内容进行某种初始过滤，或对“保存的单词”进行某种其他过滤，但最终我认为很有可能手动对其进行审核（至少某个阶段）。
Another reason I chose to answer was that little "yet" (in brackets).
All the things you have listed here are very possible. I haven't dealt too much with custom Open Graph actions but I'll get you started with some information taken from the Facebook Documentation on the Open Graph Protocol.
Here are some guide lines for the approval process of your custom actions :
https://developers.facebook.com/docs/opengraph/opengraph-approval/
There is no reference to whether is it "human verified" there might be some sort of initial filtering of obscenities or some other filter of "saved words" but ultimately I would imagine there is a good possibility that it is reviewed manually (at least to some stage).
Another reason I chose to answer was that little "yet" (in brackets).