- Google's plan to factor in "mobile friendliness" for search results, revealed in February, will be be put to the test on April 21.
- With the new rankings, sites that have problems in the mobile format—small font, items too close together, etc.—will be bumped from current spots in mobile search.
- The majority of comScore's top 100 U.S. publishers have mobile-optimized sites, but a few major ones, like Mail Online and Weather.com, could see a drastic decrease in traffic after a drop in search rankings.
Publishers, including brand sites, should take notice of Google's plans to factor in the mobile experience. If the uptick in mobile adoption hasn't already persuaded publishers to create a mobile-optimized site, Google's changes could be the final straw to move forward.