I notice that while I am out and about an idea will occur to me or something I realized a long time ago but forgot to do will come to me. Usually I am out about in the city with only my phone and wallet on me. My usual method has been texting myself the idea but this would not be as useful as something that would allow me to rapidly record my voice or tap in the idea and auto sync it to iCal or my gmail account. Somewhere that I would the next morning when I plan my day see the note/recording I left for myself. The important part is speed, I don't want to wait around to share it or email it, I just want it to automatically happen.