Search engine giant Google recently launched a new mortgage comparison tool that allows borrowers and lenders to search for the lowest rates, a development that will be carefully watched for the simple reason that, well, it’s Google. The mortgage tool is a part of Google Compare, a service that allows consumers to compare options for various products, such as credit cards and auto insurance. Though the effort is branded with Google’s name, the company has teamed up with Zillow and LendingTree to introduce this service. Compare allows...