Developers looking to market their apps to their target audiences are going to get some help from Yahoo. The company is introducing Yahoo Gemini video app install ads, which can be used to promote apps across different Yahoo properties and apps. With the self-serve UI of Gemini, it'll be easier to create video app install ads. They even integrated Flurry Personas so you marketers can target their apps to their intended audiences.  You can find out more information about Gemini over here and on Yahoo App Marketing over here.