For years, I’ve been jumping back and forth between Sparrow for iPhone and the native Mail application as I have never felt completely comfortable with either application due to each having their own limits. Sparrow doesn’t allow me to view emails one after another, and Mail isn’t as Gmail friendly
Apple has signed deals with four of the top publishers to sell books on the iBookstore but the largest of the group, Random House, is still refusing to sign. Random House says (subscription required) that they have concerns over Apple's pricing model, predicting that this model will erode publisher profits. Ironically, the other publishers have been pressuring Amazon to use the same pricing model as Apple.