File this one squarely in the "because we can," category, but the Digital Streets blog has a tip for command line junkies who want to update Twitter without opening a web browser or a 3rd party application. All you need to do is install cURL, a command line utility for Linux, Windows or OS X and then send a message to Twitter with your status updates.

In Ubuntu, here's how to install cURL:

1. Open a terminal
2. Type "sudo apt-get install curl" (without the quotes)
3. Enter your root password when prompted

Once cURL is installed, you just need to type the following to send a tweet (this time you should include the quotation marks around your message): curl -u yourusername:yourpassword -d status="Your Message Here" http://twitter.com/statuses/update.xml

It's up to you to figure out why you would actually want to do this, but now you can.