Windows 10's inquiring minds: How Hello and Cortana get to know you very, very well | PCWorld

I'm guessing the "Scroogled" campaign won't resume anytime soon

"Keep in mind, however, that whatever data you give Cortana, stays with Cortana. And Cortana wants everything: “your device location, data from your calendar, the apps you use, data from your emails and text messages, who you call, your contacts and how often you interact with them on your device,” according to Microsoft. “Cortana also learns about you by collecting data about how you use your device and other Microsoft services, such as your music, alarm settings, whether the lock screen is on, what you view and purchase, your browse and Bing search history, and more.”

Microsoft portrays all this data-gathering as beneficial. For example, any favorite teams you specify in the MSN Sports app will be showcased in the Cortana summary screen. Some benefits are less obvious: Choosing to sign into Facebook within Cortana allows Microsoft to access certain Facebook information so that Cortana and Bing can give you more personalized recommendations, according to Microsoft."

Windows 10's inquiring minds: How Hello and Cortana get to know you very, very well | PCWorld