ZooMiles is a new search engine, powered by Ask.com, that allows you to earn airline miles when searching the Web. You will be able to earn miles for every search performed on ZooMiles, up to 1,000 per month, which can be applied to any of their six airline partners: Delta Air Lines, Northwest Airlines, Continental Airlines, Alaska Airlines, US Airways or Midwest Airlines. The program, brought to you by the same folks as Shop4Miles.com, will be free — you just need to sign up and then search the Web. As an added bonus, the airline miles you earn through ZooMiles will help you keep your frequent flyer program miles from expiring because they count as a mileage program “activity.”