Facebook Graph API exploit that let's you pump up to 1800 'Likes' in an hour
youtube.com
youtube.com
Since I'm the last person (i think) on earth who doesn't use facebook, I probably miss the point but still..
I give it 12-24 months before the DoJ/FTC deem Facebook `Likes` illegal under antitrust law, for the exact logic you just laid out. It's a clear antitrust violation because it's a way for firms to mislead customers about the quality of their product.