This page attempts to define some of the terms used on this site, as they are used here.
Bookmark: any placemark, note or annotation made by a reader in a book.
Developer: in this context, anyone who builds services for reading electronic books, or acts on the reading experience.
Ebook: an electronic book.
Ereading: reading an electronic book.
Ereader: a device or platform for reading an electronic book.
Platform and service agnosticism: the principle that platforms and services should interact with one another freely, regardless of origin.
Publisher: in this context, anyone who makes an electronic book available to readers.
Reading experience: anything a reader does while reading a book, and the data generated by that experience, including progress, bookmarking, annotating, and sharing.
Social reading: see this page on social reading.
Social reading service: any service which records and acts on data about the reading experience.