Sure, automating the grind is easy; the problem is other humans noticing you're a bot. Turing Test anyone?

The surest way to make a game less automatable is to link progress to social factors. It would also make the life of everyone more interesting- including sweatshop workers. If someone is making my game more interesting and meaningful through human interaction, they're legitimately earning their dough in my book.

Of course, easier said than designed.