SAN FRANCISCO--(BUSINESS WIRE)--With more than a million apps in the world, and U.S. smartphone users spending 88 percent of their time in apps, the unique combination of apps a person has on their phone is like their digital DNA. Now advertisers can use Yahoo Gemini, Yahoo’s mobile search and native advertising marketplace, to reach mobile users based on app activity. Today Yahoo (NASDAQ: YHOO) announced that in addition to Yahoo data, first-party CRM data and third-party data, advertisers can