If you notice that organic traffic dropped 25% from January to March (or whatever), don’t panic. Don’t start ripping content off of your site, sacrificing goats to a graven image of Matt Cutts, or firing everyone in your marketing department. Stay calm and figure it out.
McKay Allen Article – All About Your Blog Traffic. What has been happening at Google, ways to remedy possible problems encountered.
See on socialmediatoday.com