Google uses an index to allow for all the searches their users do on a daily basis and this index holds information about your website our website and a whole host of websites. That index is about to be split between mobile and desktop… meaning that the mobile index will actually be populated completely independent of the desktop experience.
Remember “Mobilegeddon”? When Google announced that the mobile versions of our websites would impact our ranking? Well, this is the next step. We are still vague on the details, but it sounds like instead of it just having an impact on our overall rankings, it will now crawl and index and rank the mobile version of our websites and ONLY take the mobile version into consideration when displaying results to mobile searchers. This is a huge change and one we all need to keep an eye on.
We will post again once we know more, but it is definitely time to think about ensuring the mobile version of your site will stack up. The rumbling is this may be implemented in a matter of months.