Are you talking about auto-scraping tools?
If you're just looking to spam Google using millions of posts involving collated patches of text found from the rest of the internet, I'm sorry to say it, but you're wasting your time.
If you only have a handful of domains, it's not worth it.
Does it still work? Yes, but you better have the infrastructure for it.
What do I mean by that? You better have hundreds, if not thousands, of domains.
Google is way smarter now than when it started.
In fact, it recently released an anti-spam update that is pretty lethal for this kind of stuff.
Does it mean that the days of SERP farming and other automated, mass publications are over?
Not really, but it does mean that the players that choose to remain should have the resources to successfully pull this kind of thing off.