If you escaped the initial warning letters from Google alerting webmasters that their sites were not mobile friendly, don’t breathe too easily. Google is continuing to send out new emails letting webmasters know that these issues can negatively impact their visibility and mobile search results – and there is evidence that some of those who received the initial letters have lost some mobile rankings.

Webmasters are reporting that they’ve received new letters both yesterday and today, so they are definitely still checking websites to see if there be mobile friendly or not and anticipate them be impacted in the near future when it comes to mobile search results.

It is unclear how Google is going about checking websites. Are they starting with sites that tend to be slower first? Search query competitiveness? Or are they just systematically going through every website may have indexed and sending messages to those webmasters were there are issues found.

Many webmasters who received the previous morning found that some of their sites now have a lower visibility in mobile, although they remained relatively stable in desktop. So if they were #3 for a particular search term, they could see retaining the #4 spot for desktop searches, yet dropping down for mobile searches.

But it is clear, if you haven’t yet to meet your site mobile friendly, you probably want to bump that a little bit higher on the priority list and hope that you get your site transition to being mobile friendly before their mobile checker hits your site.