Just a quick note about an app Apple has featured and I have just purchased. It is a beautifully built app and is one of the first to incorporate iCloud sync between Mac application and your iOS devices.
Here is their explantion of the app.
The easiest to use journal / diary / text logging application for the Mac is also the best looking. Day One is designed and focused to encourage you to write more. Using the Menu Bar quick entry, Reminder system, Calendar view and inspirational messages your memories and thoughts will be preserved. iCloud or Dropbox sync allows easy backup and syncing with the Day One iPhone and iPad applications.
I think this is the future of apps in that they will allow us to access our "stuff" from anywhere, iPad, iPhone, and computer.