I have purchases books on other sites in epub format and converted the to mobi using Calibre; however, when I take and do a highlight for facebook on the kindle it 90+ percent of the time always says "Personal Document". The thing is some of the books that I have done that way "The Overton Window by Glenn Beck" for example, have shown up just fine. It shows the thumbnail on the facebook post and the title and all. Is there something specific that has to be changed to fool the kindle into thinking you purchased it from amazon's site? Really enjoy the facebook feature but I don't always get my books from amazon.
Thanks for the help.
