So today I found myself highlighting some lines in my ebook, and I noticed how well Apple did the highlight function. If you look at the full size, the coloration is uneven, a lot like the ink distribution in an actual highlighter. Also, the edges are all different and uneven, as well as the lines. Probably something people have noticed before, but it's a small thing that really made me smile. This, along with the page turning, really makes the reading experience on the iPad that much greater.