I have never used the bookmark before and never had a problem with lost pages. I don't know what prompted me to click the little bookmark, but now I am regretting it. I'm reading a 400+ page book and now every time I open the nook app on my iPad I'm back to page 19. I've tried to press the bookmark again (after searching and finding me new place) and it continues to open to page 19. Help! Did I set something on accident that can be fixed? Also if this helps, my prior books have just opened to my page when I click the app.. Now it opens to my library and I have to open the book from there.