You can find "proof" of anything you want to on the internet, whether it be that the Queen of England is really a lizard or that Steven Harper is a bible-thumping arsehole. You can "prove" Obama isn't really an American, that Kanye West is gawd or that Kanye West is the biggest ego to ever hit the planet.
The internet is just chock full of articles, forums, blogs, and other sources you can cite to support your pre-determined outcome.
It has always been this way -- there is no "fact checking" required to post something. On the other hand, there is no "editor" on a "mission" to change what you post, either.
At the core of it, the problem is not the internet nor the history it exposes, but the viciousness and old-fashioned nastiness of people who want to destroy others, often just because they can. Add that in to the human stew that just loves to hear and read nasty gossip about people they're jealous of, and you have a recipe for the "loser edit."
Where the internet differs from reality TV, though, is that with "reality" TV, all the episodes are subject to "loser edits" because that's what builds "characters" out of hours and hours of otherwise useless footage into something the general public will suck back like sweetened pablum.