It is my understanding that highlights should sync across different devices. However, that isn't what I'm seeing. I have a Nook Color (one of the first, if it makes any difference), an iPhone, and the Nook Reader app on my PC. I use the highlight feature a lot, but I am only seeing my highlights on the Nook Color, which is where I originally did the highlighting. They don't show up on my iPhone Nook app or on the PC app. This is of great concern to me because my Nook Color has recently developed other problems, and I was considering replacing it with a Nook with the Glowlight. However, if this feature doesn't work consistently, I may have to go to Kindle, which I don't really want to do. Does anyone have any suggestions? Thanks in advance for your help.