Facebook has done this periodically over the years as well. So I'm not surprised they ported that feature over or independently evolved to it on Instagram. I ha

Facebook has done this periodically over the years as well. So I'm not surprised they ported that feature over or independently evolved to it on Instagram. I had caught on to the concept of breaking the social graph by using a virgin email and never putting in a phone number not even for 2-factor even once. But then there is a great risk that they flag you for "spam" within days or minutes! Honestly, Apple needs to get in front of this on iOS just like they've done partially with Location data, Photos/Videos, and data brokering. They need to let you select shareable contacts. Kind of like the Circles that Google Wave had. Instead of letting apps force you into an all or nothing approach.