ZeitGeist logged alle acxtiviteiten op de computer zonder de intentie om deze extern beschikbaar te maken.
Echter, zullen Google, Facebook, Twitter, etc  de verleiding kunnen weerstaan om zich deze, voor hen zeer waardevolle, gegevens toe te eigenen?

Ik weet het niet. Wellicht voor de zekerheid ZeitGeist maar uitschakelen. (in Unity: verwijderen breekt functionaliteiten)

There is an easy way described here -- which does not include deleting any package, but simply de-activating the corresponding services. I didn't try it myself, but this way side-effects should be minimal (and probably even wanted, as e.g. no "recent items" being available etc. Moreover, it is easily revertable in case of "unwanted" side effects.

The author of that article explicitly states: Here is a way to disable this logging without breaking Unity or any other part of the system, execute these commands in a terminal:

sudo mv /etc/xdg/autostart/zeitgeist-datahub.desktop /etc/xdg/autostart/zeitgeist-datahub.desktop-inactive
rm ~/.local/share/recently-used.xbel
mkdir ~/.local/share/recently-used.xbel
rm -rf ~/.local/share/zeitgeist

Reverting this (if one wants to enable Zeitgeist again) thus should be done like this:

mkdir ~/.local/share/zeitgeist
rmdir ~/.local/share/recently-used.xbel
# no action for the .xbel file, as it will be re-created automatically
sudo mv /etc/xdg/autostart/zeitgeist-datahub.desktop-inactive /etc/xdg/autostart/zeitgeist-datahub.desktop

which is simply "reversing" the steps of the de-activation.

Remark: The ~/.local/share/recently-used.xbel has nothing to do with Zeitgeist itself, it just falls into the same category somehow. The article mentioned is about "disabling activity logging", and thus included this. If you just want to disable Zeitgeist, you can skip the two middle steps.

Bron: http://askubuntu.com/a/149799