Had an exam earlier... hasn't done well for my brainpower.
Of course they already have the data, and as you mention, exporting it is fantastically easy from their end.
My line of thinking probably evolved from the ease with which Facebook could just push the entire zipped file to purchasers, instead of just the relevant info. This is incorrect in that 1) I wouldn't imagine facebook shares its actual data, just uses it to allow advertisers to target their ads, and 2) even if they did, I seriously doubt they would group data by user thoroughly enough to be identifiable.
Half of my concern was what would be accessible via facebook connect, and the ability of a malicious website to harvest scary amounts of personal information via this + cross-site user tracking (about which, admittedly, I know almost nothing). Again, the data dump is only about ease of access, not a totally new ability.
I'm also talking about things I don't really know about. I've never used fb connect, nor do I have experience with cross-site user tracking. But I'm certainly under the impression that it would be possible to combine these two concepts into something disturbing. (http://www.informit.com/articles/article.aspx?p=1250497 would seem to imply that a large advertising network could do this sort of thing (though I'm not sure where the fbconnect info would come from, exactly).
My line of thinking probably evolved from the ease with which Facebook could just push the entire zipped file to purchasers, instead of just the relevant info. This is incorrect in that 1) I wouldn't imagine facebook shares its actual data, just uses it to allow advertisers to target their ads, and 2) even if they did, I seriously doubt they would group data by user thoroughly enough to be identifiable.
Half of my concern was what would be accessible via facebook connect, and the ability of a malicious website to harvest scary amounts of personal information via this + cross-site user tracking (about which, admittedly, I know almost nothing). Again, the data dump is only about ease of access, not a totally new ability.
I'm also talking about things I don't really know about. I've never used fb connect, nor do I have experience with cross-site user tracking. But I'm certainly under the impression that it would be possible to combine these two concepts into something disturbing. (http://www.informit.com/articles/article.aspx?p=1250497 would seem to imply that a large advertising network could do this sort of thing (though I'm not sure where the fbconnect info would come from, exactly).