The tragedy of the commons would be people chewing up a limited resource in a way that prevents other people from doing better things with it. What is the comm

The tragedy of the commons would be people chewing up a limited resource in a way that prevents other people from doing better things with it. What is the common resource that you think is being used up? If it's the brainpower of the people writing SEO blogs, it doesn't prevent other people using their own brains. If you think they are polluting the infosphere with crap, I can't really argue with that, but I can point out that it's generally ignorable and self-curing: when you don't make money at it, you stop. So if anything, it resembles a late-stage ponzi where people aren't paying in much but are getting nothing back.