I just watched the Quidsup video you mentioned and was interested as I run Debian. Like Quidsup, I thought the popularity-contest package was installed even though I specifically instructed the installer NOT to install popularity-contest. Upon checking after installation finished, popularity-contest was indeed NOT installed as I specified. I can understand Quidsup's statement, as I too thought the Debian installer did something I specifically told it not to do. Either way, popularity-contest is fairly innocuous and easy to remove if you wish.