In the diagnostics tab of the privacy settings menu, it says:
People using this computer can:
(checkbox) Send error reports to Canonical
Error reports include information on what a program was doing when it failed. You always have the choice to send or cancel an error report.
I don't plan on enabling this, but I think it might be important for other people to know where their private information is sent, and I couldn't find the answers using this forum's search function.
¹ That's an understatement, of course I know I'm running mint.