Your tweets will go down in history.

• Position: The Web - The United States Library of Congress' decision to archive messages from the online service Twitter - Brief article

Ashton Kutcher and Britney Spears each have more than 5 million followers on Twitter. But are their tweets part of "the universal body of human knowledge"? The Library of Congress thinks so. In fact, it's going to archive all of Twitter, which currently carries 55 million messages a day, including your tweets. The library, which serves as a research facility for Congress, is the world's largest, housing millions of books, recordings, maps, and recently, digital material: 167 terabytes so far--much more than...