Twitter Explains Trending Topics

For those who haven’t noticed, Twitter recently added explanations to the “Trending Topics” results.  Wondering what “New Moon Soundtrack” is and why it’s a trending topic?  Twitter explains:

The soundtrack for the Twilight sequel, New Moon, will be released this Friday (Oct. 16, 2009). It is already available to listen to in full on MySpace.

Take a look at some of these Twitter explanations.  In my opinion, this would be a pretty neat feature to someone who tends to keep up with the latest trending topics.  However, I can’t remember the last time I’ve cared to look at them apart from the occasional Google mention.