Twitter added a really cool feature – tracking:
You can follow friends on your phone through Twitter, but what about concepts? What if you wanted an update anytime anyone mentioned your name, your favorite band, “NYC,” “earthquake,” or “Steve Jobs?” In real-time? What if you were attending an event and wanted to know who else was there?
You can send “track something” from your mobile or IM and get instant notifications when somebody metions “something” on Twitter. Works like a charm. I’ve already subscribed to “mamchenkov”, “cyprus”, and “wordpress”, and not only I got some notifications, but I also found some relative content.
With this feature it is easy to get news and answers to questions even for those people who don’t have many friends. You just type your WordPress question in, I’ll get it in a second. Then I can reply to you with “@your_nickname”.
The only thing to be careful about is generic terms and brand names. You’ll get notifications in all languages, not just the ones you can understand (I got this tested with WordPress, which is a rather popular piece of open source software used all over the world)… Still, love this new feature.