Mixpo, a Seattle startup that makes it easy to create online video ads, has acquired Portland-based ShopIgniter in a deal of undisclosed size. The companies should know each other well, since both are based in the Pacific Northwest and backed by Madrona Venture Group. "With Facebook and Twitter's increasing focus on video and the overall growth in mobile advertising, we saw an opportunity to integrate ShopIgniter's social and mobile capabilities with Mixpo's multiscreen video ad platform," said Mixpo CEO Jeff Lanctot in a release. "ShopIgniter has a tremendous product and a great team. We're happy to welcome ShopIgniter employees to … Read More on GeekWire