Graph API quotas?

Does anyone know what are the content limitations in Facebook Graph API?

I noticed that using the API returns less results than the user i开发者_C百科nterface. I couldn't find neither any logic in the quantities nor an appropriate documentation.

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There are some posts which, for whatever undocumented reason, don't show up in the Graph API. This isn't new, and may in fact be a feature of the Graph API (some obscure privacy setting maybe? I dunno). Whatever the case, it's not documented.

As far as quotas go, I have apps that have run through hundreds of thousands of API requests in a matter of days with no problem, and as far as I'm aware, there's no quota system in place (at least not currently).