Printed book says "(I hope I'm not losing any of the non-geeks who have steadfastly refused to leap ahead to page 120.)", changed because this document has no pages.
Printed book says "poposed", which is likely a typo: changed to "proposed".
Printed book says "There are good bad ones and really bad ones.", added comma in the listing.
Printed book says "And what does this all means?", deleted "s" in "menas" to correct grammar mistake.