Thanks Adam for such a succinct list of useful apps. Really like iAnnotate after checking it out. Just wanted to add two great apps to your list. Notes plus http://notesplusapp.com/ is a great note taking app that has just so much functionality. I have never been unfaithful to it since. mobileRSS http://www.mobilerssapp.com/ is another great app I use to follow multiple blogs that help me unlearn and relearn such as this, from oneplace. Can't miss an important blog.