What do you look for in an OG? I'd think that you'd get more consistent results by adjusting the corn sugar to hit the same OG on every batch. I buy UV-pasteurized cider from a local grower and mill, and found the gravity to vary from 1.035 to 1.052.
I don't think anyone thinks the OP is going to harvest anyone's personal data. It's more that people hate that Facebook acts like a snoop on all of your browsing, even after you log out.
For anyone who wants to check out the app but doesn't want to get data raped by FB, create a throwaway FB...
If you really need to switch away from HBT at work, a foot-operated switch is invaluable:
http://www.amazon.com/Stealth-Updated-Software-Computer-Footswitch/dp/B00MI6K77K/