As I understand it, you can't downvote posts. So a post should not drop from 48 points to 20.
If I had to guess, I'd say the submission got heavily penalized for being trollbait. Either by the mods, or by the community.
There surely is more than in the official download. You can't even see likes there, let alone shadow profiles, multi-accounts and whatnot.
Does living in the EU help maybe?
As far as I know, living in the EU does help: my understanding is that within the EU, all your data belongs to you even if it's stored by Facebook; as opposed as the US, where Facebook is the rightful owner of the data you provide.
https://www.google.nl/maps/place/Office+of+the+Data+Protecti...
And now you also know why Silicon Valley likes to have their European headquarters in Ireland. It's not just because the beer is fantastic.
(but still no likes they say: (2nd paragraph) http://www.europe-v-facebook.org/EN/Data_Pool/data_pool.html )
Search history is indeed a nice example. It's so easy to prove (they autocomplete past searches, even if it's a long random string initially typed on another machine/browser)
oh, and so does any other app that has calendar permissions (uber, etc)
