Sort:  

Do they? I thought I read a while back that they got rid of that stuff as of 16.04?

~furiously scouring the interwebz now~

Check the repository: Zeitgeist or libzeitgeist

Zeitgeist is a service which logs the user activities and events (files opened, websites visited, conversations held with other people, etc) and makes the relevant information available to other applications

Just make sure it's not installed. I used to use just plain Jane Debian just because of that program. Certain desktop environments automatically install it