When Metadata Comes to Twitter | PCWorld Business Center

When Metadata Comes to Twitter | PCWorld Business Center: What I'm talking about here is metadata--data about data. I'd love for every tweet that's sent out to be categorized in some way by the tweeter. Tweets need metadata in the same way that books need a title. Is this tweet about an interesting new blog post by the sender of the tweet? Or about an interesting blog post by someone other than the sender of the tweet? A tweet about a useful free resource for educators? A new explanatory screencast about open-source software? A tweet about an inspiring video on YouTube? A tweet that'll make me chuckle?