Nowadays, I use to check mails and use facebook, reading newspapers through my smart phone itself. I rarely use the PC (saving electricity), that too just for typing some letters. Using the smartphone in my car through 3.5mm jack and it sounds good.
Sure, smart phone will replace so many gadgets in the future...
advantage of having all the features in single mobile. like fm, mp3, mp4 player, camera, video recorder, etc. but disadvantage, when the mobile instrument becomes defective, all ur features go dead simultaneously. but if u had different fm player, mp3 player, video recorders,etc. u vl b happy!!! different angle of thinking may b!!!