Hi there at O`reilly
I suggest to build in an option into your website to bookmark an interesting book, if one do not buy it at once, but wants to keep it in mind.Like Amazon has one.
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Thanks so much for the suggestion as we really appreciate when our customers take the time to let us know what they feel would make our site better. Those who take action on those types of changes have seen your feedback. Have a great day!
Customer Service Representative