"79% of large online retailers do not have mobile ready websites. Since 2010, mobile searches have quadrupled." Possibly a good idea to re-engage all of your past SEO and clients you have developed for and make sure their site is optimized for mobile viewing. This stat is only going to keep increasing and may help you generate some additional income if you are good at optimizing sites to be congruent on mobile devices. Those stats are from large online retailers, so you know it's probably 90-99% for local businesses and their websites.