Nothing did change with links, the sites made nice revenue for almost three years. This is just to let everyone know massive sitewide 301 will lead to a manual inspection.
And if the reviewer has a bad day he will tank all of your sites within 5 minutes. Oh sorry, he forgot a site, yes a single site survived LOL
Two of them were even sites which improved with the panda algo, he just got a hammer and crashed them all. It's time to get some "I love Goog" sticker or better "I hate Goog".