About time too. There's still a fair amount of spam out there but it's way better now than it's been for a long time.

I wonder though, will the spam sites with 10,000 backlinks generated in a day be detected before getting indexed, or will they rank then get caught?

This is interesting, a friend of mine works with a very prominent UK payday loan provider managing their SEO. Will have to get in toucha nd see if this has effected his client.