Google tries out new ad targeting technology, PayPal adds cryptocurrency support and Substack raises additional funding. This is your Daily Crunch for March 30, 2021. The big story: Google starts testing its cookie alternative Google announced today that it has begun rolling out a new technology called Federated Learning of Cohorts (FLoC) in a developer trial. FLoC is meant to serve as an alternative to personally identifiable cookies (which are being phased out by Google and other platforms), with Google analyzing your web browsing behavior and grouping you with other…