Do you rely on prospects finding your website via online search? If your website has a separate mobile version or is responsive, then you are already ahead of your competition. If it doesn’t have a mobile version or isn’t responsive, then, as of April 21, 2015, your website’s mobile search engine rank in Google will suffer. This means that your site could rank well in Google searches made from a desktop or laptop computer but very poorly when someone searches from a smartphone, tablet or other mobile device. Not only that but, as I’ve mentioned before, if your site is not mobile friendly, you risk frustrating those users when they visit your site, at which point they may leave your site and go to a competitor’s site. Search Engine Watch talks about the Google mobile-friendly policy changes and about mobile usage exceeding desktop or laptop use.
Update: Searches on tablets will not be affected. See Google’s FAQs about the mobile search policy.