How about someone creates a network of users that are vetted in some way to basically be 'honest' actors and not bots, then they use a browser extension that lets you view and input likes and dislikes for content across the internet independently of what the site provides. Will stop bot-ing/gaming of system if it works. Also if network is small enough even a couple of plus votes could be enough for you to 'trust' that it has a genuine positive review from a reasonable person.
