Metaphor-a-Minute!
Requires node and npm. You also need a Twitter App access token, consumer key, and associated secrets: https://dev.twitter.com/apps/new
Finally, you need a Wordnik API key, which you can apply for here: http://developer.wordnik.com/
(You'll need to add all that info to metaphor.js before running the program, otherwise Wordnik and Twitter won't play nice. Don't worry, it's all commented.)
npm install node-restclient@0.0.1
npm install twit@1.1.6
npm install express@2.5.9
node metaphor.js