Ask HN: Effective arguments to convince someone to get on Twitter?

I use Twitter every day (I'm "swombat" on there too, btw). I even know some people in real life who are also on Twitter. One of them, I even convinced to get on Twitter directly (i.e. I talked him into it, and he's still using it now).

Twitter is really hard to explain, because the reasons I use it are not the reasons that you use it. Perhaps because of this, there's also a whole variety of possible arguments for why someone should get on Twitter, and so far I haven't figured out any clear, universal argument.<p>My question is, what are the best arguments that you've used and which worked and successfully convinced a Twitter-free friend who didn't "get it" to join the tweeting ranks (for more than a handful of tweets)?

The only argument I've managed to make work, so far, was "Try it honestly for 2 weeks, making an effort to follow some people and post some tweets once or twice a day, and then decide". But it's pretty hard to convince people of that, so so far, I've only convinced one person to do it.

Thanks. Looking forwards to reading other people's arguments...