Is "unlocked" the right word? I think exposed is more accurate. And that's a good thing isn't it? Take these comments for example:
"Using the examples of church sex scandals, politicians’ expenses and phone-hacking, he added: ‘In the last few years every single pillar of society has collapsed one after the other.
‘I can’t remember as a boy growing up that so many pillars were found to be so rotten."
The Internet didn't "unlock" these misdeeds - it exposed them - informing the world and allowing something to be done about them.
In addition, these pillars were rotten decades ago and only fell in the last few years thanks to the Internet. He can't remember the pillars being so rotten because there was no Internet to expose them when he was a boy.
I don't know if a book has been written on the subject but, someone should write one.