I printed my cards on those perforated Avery business card sheets they say:
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Sony Reader PRS 505 (
www.sonystyle.com for specs and details)
Can purchase online through ebay or B&H photo video NY (
www.bhphotovideo.com) or in person in the US and Europe
Best software Calibre (calibre.kovidgoyal.net)
Best source of ebooks
www.fictionwise.com and
www.gutenberg.org (and tons of others)
Best source of additional information about this and other ebook readers
www.mobileread.com
And it is the best gadget I have ever owned.
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I figure that covers pretty much everything anyone might want to know. It surprising how pleased people are to get all that info.