In USA at least 50% of websites in Q1 2011 were not Mobile optimized, for the rest of the world is is true for the most.
Mobile Web is growing 8 times faster than Internet did at the same age which back then was called and "explosion for Websites".
Mobile carrier Internet traffic increased several thousand percent in last couple of years.
Average mobile smartphone user visits couple dozen of Websites per day, mostly by news aggregation services.
