Autographs are so yesterday. At least that's what Taylor Swift says in a piece she wrote for theWall Street Journal.

She says, "I haven't been asked for an autograph since the invention of the iPhone with a front-facing camera. The only memento kids these days want is a selfie. It's part of the new currency, which seems to be how may followers you have on Instagram."

Taylor says the advent of YouTube and Twitter will change the way artists interact with their fans. She sees a future in which artists will be signed because of the amount of fans they already have on social media. And because most of her fans will have already seen her show via YouTube before it hits their city, she has to give them something different every night -- like surprise guests. "We want to be caught off guard, delighted, left in awe. I hope the next generation's artists will continue to think of inventive ways of keeping their audiences on their toes, as challenging as that might be."