I joined twitter just a couple of weeks ago. Previously, I heard a lot (quite annoying really) about it, but held back, just to see how long I could resist the temptation. Now that I’m on it, I’m looking for suggestions, what are the most useful twit services are out there?

I found this, that I find very useful – Perth Weather – http://twitter.com/perthweather

What are others worth looking/ following?

Thanks.