Originally Posted by Elfwreck
A 16-year-old can have a job, and earn a paycheck... but he can't take that paycheck to an ebook store and buy anything without adult intervention. That's going to severely curtain teen use of ebooks. As long as they're an adults-only purchase (or a "let Mom set you up with a special account and a spending limit" purchase), they're not going to be a big part of any teen's life.
Teens can buy books from brick & mortar stores, and they do. They can buy CDs, and they do--and rip them & exchange the files. (Nevermind the darknet; they swap flash drives of songs around among their friends.) They'd do that with the books if it were possible.
While most teens don't have a Credit card, I think almost any teen with a job is going to have a bank account... That can be easily setup with paypal, which many online retailers will accept. If not that, then most will have a debit card they can use. They have to have some way to get that money back out...
Also, as the book industry continues to mirror the music industry (as much as it can), I think we'll see gift certificates for books pop up much like the iTunes gift cards that can be purchased just about anywhere...