martinibuster - 2:45 pm on Sep 20, 2012 (gmt 0)

Wow, seems like there's quite a bit new. Scroll down on the picpaste page and see all the new parts Sexton highlighted. These are interesting because they may point at areas their algorithm are going to target harder:

Avoid scraped content. Avoid automatically generated content. Monitor your site for hacking and remove hacked content as soon as it appears. Prevent and remove user-generated spam on your site.