By The Manta Team – April 20, 2015 Ready or not, here it comes. Google is at it again, tinkering away and tweaking their top-secret algorithm. And while Google has long-considered mobile usability a factor in ranking sites, this time the stakes are higher. If you’re a part of the majority of small business owners who have been riding the wave and still are not in great mobile shape, you may see some negative shifts in your ranking when all is said and done. G-Day hits April 21, and their advanced warning should not be ignored.