Your two links illustrate 2 important concepts -

1) it takes almost nothing to destroy someone. perhaps not forever, but for all the time really needed. one blip about child pornography, an affair, a racist comment, an unpatriotic comment, drugs, taxes, something. having a ton of info about you - including your old personal high school email in this case - makes it easier to slip in the fix and make it more subtle. no need to assassinate people, or send them to re-education camps - just quickly destroy them anonymously and move on

2) people are already lazy about info and new breakthroughs will increase that with information overload. we use Wikipedia every day even though we know it's flawed, but it's "good enough". What if Wikipedia is getting worse and worse, more bias error, more disinformation? how long will we keep using it before finding something more accurate? how will it have biased any other info sources? (or driven them out of business since quality researched Encyclopedia Brittanica can't compete with a bunch of free content - some good, some awful, much very social and not old-school encyclopedia). Most times we'll take the easy answer over the better more-researched. It's why we buy crap at the checkout counter - location location location - sloth wins 90% of the time.

and the Google glass demo also makes me think I was more right in my George Zimmerman example than I thought - of course someone would decide that Google glass would be perfect for a Neighborhood Watch guy - "the benefit outweighs the harm" as is ever said. So they'd hook that Google glass up to NSA archives, 3 degrees of freedom, and he'd be able to pull up relevant, location-based info on that license plate or nearby mobile phone. And that system will send out a short pithy summary that might be accurate or might be grossly or partially misleading depending on the circumstances. We have to train ourselves to use easy information better, to question pre-digested "facts" where we've no idea of the bias and assumptions that formed that fact. It's like candy to a baby, or radiator fluid to a dog - tastes sweet going down.