From Facebook Developer Wiki (FbDevWiki.com)
Query this table to return a user's privacy setting for a given
Highlighted rows are indexable / searchable and one is usually required in the WHERE portion of the query.
|object_id||string||The ID of an object on Facebook. This can be a video, note, link, photo, or photo album.|
|id||string|| The object ID (this is an alias for the "|
|value||string||The privacy value for the object, one of EVERYONE, CUSTOM, ALL_FRIENDS, NETWORKS_FRIENDS, FRIENDS_OF_FRIENDS.|
|description||string||A description of the privacy settings. For CUSTOM settings, it can contain names of users, networks, and friend lists.|
|allow||string||The IDs of the specific users or friend lists that can see the object (as a comma-separated string).|
|deny||string||The IDs of the specific users or friend lists that cannot see the object (as a comma-separated string).|
|owner_id||int||The ID of the user who owns the object.|
|networks||int||The ID of the network that can see the object, or 1 for all of the user's networks.|
|friends||string||Which users can see the object. Can be one of EVERYONE, NETWORKS_FRIENDS, FRIENDS_OF_FRIENDS, ALL_FRIENDS, SOME_FRIENDS, SELF, or NO_FRIENDS.|
from a posting on the official docs (2011-02-16):
Hi. I'm currently querying this table to retrieve the privacy settings for a photo album. According to the documentation, when a user specifies "CUSTOM" privacy settings, and makes an album visible to specific friends (e.g. visible only to "Alice" and "Bob"), the "allow" field in the privacy table should contain Alice's and Bob's IDs separated by a comma. However, I found that it only contains a very large number (something like: 10150094209557763) that has nothing to do with Alice's and Bob's IDs. Any ideas about this?