Slashdot Bismillah pointed out that the researchers also measured sleeping patterns over seven years, assuming IP addresses of internet-connected devices generally correlated to people who were awake. According to the article, "They found that sleep patterns may be changing and converging around the world: Europeans slept less, East Asians more, while Americans' sleeping patterns remained static over the seven-year period."
Devuan.org now features an "init freedom" logo with the tagline, "watching your first step. Their home page now links to the download site for Devuan Jessie 1.0 Beta2, promising an OS that "avoids entanglement".
I'm a little uncomfortable giving a stranger's web site access to my personal information - even if it is for the purpose of deleting it altogether. But the original submission ends with an interesting question. "Can we get this for government databases too?"