Using the Whispersync technology means that your last page location is synchronized as well as your bookmarks and annotations across all your devices. (ereaderspotlight.com)
For example, google my name and you'll find my fan page location with its own separate listing. (jelenpub.com)
The market needs a robust standard format, which the ePub format appears poised to deliver, especially when the DTBook XML vocabulary is implemented to preserve page location in a form that can be used to cite page and edition for a highlight, note or copied text. (zdnet.com)