Originally Posted by StarkReality

Google doesn't hate splogs, google's way of ranking sites is the reason why people fire up legions of splogs.

Ranking is all about links, it's a battle you can only win if you add more and stronger links to your sites than your competitors. That's why people automate, since growing and maintaining huge networks with all hand written stuff is pretty much impossible and way too much work, time vs. reward wise.

So, people grow huge bubbles of link laundering sites and link feeders around their "real" sites, and all of them need content, even better if these sites make money themselves.

SEO is often more about brute force link building techniques than about A -> B -> C trades.