Is anyone else noticing some crazy things in the SERPS currently? Firstly I've noticed that a lot of my sites are showing as being updated in 2011 even though the domain wasn't registered then. Secondly I've seen some mega movement down in the past few days, but only for specific pages. Some are still where they were on the same domain.
Then I got a weird manual action warning about 'rich snippets spam' via WMT even though I'm not using any.
I thought it might be a negative SEO attack but nothing yet.