i just returned from my home country ( spent a month there for holiday ) and pda is really popular there. it reminds me a few years ago when everybody WANTED a cellphone or two. i really want to know WHY do you need a PDA? i dont know much about pda, really. is there something that makes it absolutely useful for something? a feature that once you are get used to it you cannot live without it? like, going from 15 inch monitor to 19 inch...you cannot go back. please share some opinion with me. btw i am not asking this because i want a pda, i am just curious.