Snoop Dogg-backed fintech Klarna is taking a page out of Amex's playbook and launching a loyalty program to edge out its buy-now-pay-later rivals

· Klarna is the first buy now, pay later startup to launch a loyalty program.
· Every time a shopper uses Klarna, either via its app or with partner merchants, they earn a "vibe" point that can be collected and redeemed for rewards like gift cards for Starbucks and Uber.
· Klarna has seen demand for its product surge amid...