[rtsil]

But people are already gaming the system, and on any search from product reviews to code snippets, I see SEO-optimized spams populating the top results. Good content creator don't have the time or the technical inclination to reverse-engineer the ranking algorithm (or to brute-force by creating tens of thousands of sites and see what sticks in a giant multivariate test).

Knowing the actual rules might give them a fighting chance, since the bad guys already know these rules anyway.