In the following video, Motley Fool tech and telecom analyst Andrew Tonner takes us through a major advertising change by Google (GOOGL -1.51%). The company is changing its requirements for users of its AdWords online ad system to require advertisers to increase their advertising presence on smart devices. While this may be controversial for the advertisers themselves, from the investor's perspective this is a great move that may finally start to achieve the ad revenue from mobile that Google has been desperate for. Andrew tells us that this transition will take time, but that it's just another reason long-term investors should love this company.