After being forced to give up its in-app purchasing feature, Amazon has finally brought a finger-friendly Kindle store back to the iPad. The company launched a web-based shop designed with touchscreens in mind today, accessible at Amazon.com/iPadKindleStore. It's not an ideal solution, but at least you can quickly switch back to the Kindle app and start devouring your tomes. Or, you can continue with your browser-based experience and use the Cloud Reader.