- Decisions and opinions brew over time, but in bursts; you spend some 'active' time thinking, or get intuitive realization in 'background', or something 'external' happens. When one of those occurs it's important to write down the new ideas or changed opinions immediately when it is in memory with all details and emotions. Your timed email reminders seems completely wrong way (for me).
- The decisions worth tracking are the important ones, and to trust any cloud based application with critical financial or personal decisions is major barrier. You would need to offer some pretty amazing benefits over tracking in encrypted plain docs, but i'm not sure what those amazing benefits could be: plain docs work fine.