Personally, i dont think i could go on a trip without the net! I am something of a complusive organiser, and i have to know every detail of my trip before i set off. I use the internet for all the intial stuff - where im going, how im getting between places, train times, accomm etc, but in terms of what im going to do in a place i still prefer the good ole lonely planet. Dont like readin lots of stuff on the net, and much prefer the book. Obvioulsy once im in country then the book becomes my friend more than the net, but i will always find an internet cafe, just to check everything is ok.
Life without the internet would be a very unpleasant experience for me and i dont think i would have made the trips i have if it hadnt been for the net.