People are always telling me that they just don't understand the facination with Twitter. What's the big deal? Do you really want to know what someone is doing 24/7? Twitter can do a lot more than you might expect and there are plently of practical and fun uses for Twitter.
A PC magazine articule listed some of these of the pratical uses such as Twitter Witness = Twitness "turns something solitary like TV watching into an interactive, shared experience", Breaking News, Communication, Feedback, Crowd-sourcing, Informal Polling, Public Address System, Sales and Marketing and Tweet Ups aka "Meet Ups".
I prefer some of the less pratical uses like when I need to flip a coin and I don't have any change? Well there is an app for that: http://jazzychad.net/rollthedice/ Sometimes I just want to talk like a pirate? http://postlikeapirate.com/twitter.php
There are also useful apps out there too This one tweets you when yout package moves. Just enter a FedEx or UPS tracking number. https://twitter.com/TrackThis When I am late for work and need realtime traffic updates? http://www.commuterfeed.com/ Here are some services allows you to enter reminders and will tweet you so you don't forget: http://www.rememberthemilk.com/services/ http://twitter.com/timer
Twitter has devious uses as well. There are even DUI Check point Tweets. (http://www.whtm.com/news/stories/0110/698397.html)
Twitter can be valuable tool if you make the most out of it.