Mobile advertising grows while pay for impression ads spend continues to lag behind

As expected more users click on mobile ads (we do not know how many accidently) and mobile ad impressions continue to grow. For example, 2013 in the USA 1/3 of all paid search clicks were mobile but the spend was ¼ of ad budgets. Cost per click actually fell YoY about 8%.

Google and Facebook has mobile as billion dollar business, but it continues to be less lucrative