Twitter can be VERY easily set up to work with your phone (SMS) and is no different from SMS'ing - By using twitter fuelly wouldn't have to pay/set up there own txting service they could piggyback off twitter and while this isn't my fav way of doing it (ie. my twitter updates will have random-looking numbers and most of the people who follow me dont want to see how many mile i got how much it cost and how many gallons i bought) it is better than mobile web which is SLOW (unless you have a crackberry or and iphone type of phone)