Hurry -- this Chase credit card bonus ends soon and is one of the easiest-to-earn welcome bonuses we've ever seen. Here's why ...

One popular strategy is known as credit card churning — opening and closing cards to earn sign-up bonuses and rewards.

It earns eye-popping rates at some of the biggest brands in America, including Amazon, Target and Walmart, plus 3% back in other popular categories. But there's a rewards cap and an annual fee ...