I have been using backpack for about 6 months now, and I love it. I typically write quick notes throughout my day, whether at work or at home, and track daily, weekly and monthly to-do lists. Since I am a web app developer, I often have a browser open, and one of those tabs is usually set aside for backpack. It helps me stay organized with what I have to do between home and work, and keeps me on track with my day-to-day work tasks. It also helps that the interface is intuitive and to the point. I recommend you take it for a test drive today.