You’ve probably heard of cashback apps and websites before, but Rakuten (UK) is one of the ones that feels like it’s getting it more right lately. If you’re already shopping online anyway, Rakuten lets you earn something back. And when promotional offers line up right, it can feel like free money with minimal effort. Here’s what’s solid about it, what to watch out for, and how you can make it work for you What is Rakuten (UK)? Rakuten is a cashback platform where you shop through their site or app (or use their browser extension), and when you purchase at one of their partner retailers, you get a percentage back,…