I probably have about 20 apps on my iPhone that I rely on regularly. The ones that I probably use most - and which I have written about previously - are Tweetie2, Facebook and Instapaper. But there are two that I am using more and more. The first is Evernote. I use this as my digital memory; to capture work and personal notes; to record reminders, to capture photos and more. Oftentimes when I am at the bookstore and see an interesting book, I'll snap it to Evernote so that I can check it out later online. I love how it stores all content in the cloud and is accessible either from my phone or a browser. I have not yet signed up for the paid version of this application, solely because I don't really need all the storage space, but it's something I will likely do soon. I don't yet use Evernote every day, but I do use it multiple times each week.