So Google have just rolled out their latest update and it will catch a lot of businesses and people out.
Do you have a mobile site up and running and think you are safe? does your mobile friendly site sit at http://m.domain.com?
You might have it all wrong.
Your site needs to be responsive. So your main site needs to adapt to the device viewing it and give the end user a friendly experience.
Have you tested it yet? http://ami.responsivedesign.is/