Is Twitter for twits?

It's funny how many people who know about technology, read (or write) blogs, engage in social networks and are generally technophiles know about the new, latest buzzwords.
Twitter is a fine example. You can say the word to a lot of people who have a Facebook profile, maybe even use RSS feeds, possibly read blogs, and yet they still have no idea what it is.
So if you're one of those people...

Techieterm: Twitter

Definition: a social networking site that allows people to track each other by writing and exchanging short text messages. This has been copied from the CIO.com blog. Another way of thinking of it is a 'microblogging' site where your blogs, or messages, are limited to 140 characters in length.

Advantages: it enables users (individuals or organisations) to post messages about what they're doing or what they're going to do etc. - which require very little engagement. It can be updated from a mobile phone - hence from anywhere in the world. They were used by demonstrators in Burma to tell the world about the political oppression a few months ago. It is also used by organisations such as the FT, the Guardian, and 10 Downing Street to post news and schedules.
You can subscribe to 'Twitterfeeds' from people you want to follow, and thereby be updated automatically - either on your iGoogle page or using a stand-along program etc. It's like a ticker-tape update on what your friends/colleagues/favourite organisations are doing.

Disadvantages: a fine line needs to be walked to avoid inundating followers with useless information. For friends to say 'I'm just having a tea break' might be OK. For an organisation, how trivial do you want to go? Does it matter? Is it worth it to speak to the very few people who are tuned in to Twitter?

Like Ed Yourdon, I'm speaking at a conference on Web 2.0 next month and want to show people some of the features of Twitter - the potential of it - live in the conference. Ed posted his problem in finding a suitable program to show the twitter feeds on a conference screen...but I don't use Macs (for various reasons - we'll go into them some other time) and using the work laptop I'm wary of trying to get any add-on installed. So we shall see.
But if anyone can recommend a PC friendly twitterfeed program, please let me know. Meanwhile, I shall continue to Twitter, but under an alias as it is for the organisation and not for me.