Book Selling, Used Book Selling

Hot trend for the hipsters and computer-savvy 30-somethings- selling used books. (Still? I thought this market had matured.)

How do you make this stuffy trade cool enough? Why make PDAs into book scanners to give you the used book values for online sites. No more guess work when you're picking over shelves of books at library and garage sales.

Thank you Book Think and scoutpal!

So next time you're rummaging through the library sale, check for the competition using phones to figure out the best books to resell.

References:
Ask metafilter discussion.
And for the old school types- a print book about online selling.