Here are some email messages I received from an automated system.
October 20: "This survey must be completed no later than November 14."
October 31: "Reminder, this survey must be completed no later than November 14."
November 12: "Final reminder, this survey must be completed no later than November 14."
November 14: "Extension, this survey must be completed no later than November 19."
November 19: "Final reminder, this survey must be completed no later than November 19."
November 28: "This survey must be completed no later than December 16."
I gave in and clicked the survey link.
The link was broken.
I guess the people running the survey said, "Gosh, we're getting no responses. Let's extend the deadline."