Chat. This section showed some old chat conversations. All data was rather recent, which means that chat messages were deleted sooner or later. It is unclear if this section is still existing after facebook recently merged its chat and messaging function into one, but seems if all chat messages are now following the rules of normal messages.
Note: According to facebook’s privacy policy messages will never be deleted.
Example:
...
Author Max Mustermann (123456789)
Recipients Petra Musterfrau (987654321)
Sent 2011-06-06 19:05:56 UTC
Body Hey, do you want to stay at my place tonight?
