Hello MilePoint fellows, I am a newbie travel hacker seeking advice on "card churning." I've followed blogs such as Frugal Travel Guy in the past, who mentioned earning several thousand miles through applying for promotional credit cards and then cancelling them. How does this affect your credit? What are the downsides or disadvantages to opening and closing several credit card accounts? Once you have the bonus miles, do you simply cancel the card immediately? If you could give me a general idea of how card churning works, I would appreciate it.