When you search for something online, chances are you Google it. The company handles about 90% of search traffic globally and makes money by selling ads based on the things it knows about you. But, there are competitors offering the ability to search privately, including a new one from folks who learned the trade at Google. Sridhar Ramaswamy worked in ads at Google for 15 years, and he’s the co-founder of Neeva — an ad-free, subscription-based search engine that launches Tuesday. But why would people pay $4.95 a month for something they’re used to getting for “free?” Marketplace’s Amy Scott interviews him to find out.