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Purchase 10 PPP

Purchase 10 PPP

Watermarked PDF

This item allows you to purchase additional Publisher Promotion Points. PPP's can be used to purchase promotions for your products such as banner ads, space in the featured products on the front page, and coupons in our newsletter. This item is worth 10 Product Promotion Points (PPP), and should only be purchased if your customer account is associated with your publisher account.

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Reviews (1)
Discussions (1)
Customer avatar
Travis P January 02, 2014 6:14 pm UTC
This option to buy Publisher Promotion Points is expensive, but that is well and good. The whole purpose of the PPP system is to ensure fair distribution of the promotional services of the website, and to that end the vast majority of PPP are distributed by the default system. If someone could just buy a bunch of PPP, then only the best funded publishers would ever be able to produce featured product listings. Having this expensive option minimizes that risk.
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Product Information
Silver seller
Original electronic
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
January 01, 2000
This title was added to our catalog on January 01, 2001.