http://twitter-tagger.nodejitsu.com/
Using the Twitter firehose, NLTK, the Yhat streaming API to tag tweets in real-time.
# set twitter API
$ export consumer_key="abcd1234"
$ export consumer_secret="efgh5678"
$ export access_token_key="ijkl91011"
$ export access_token_secret="mnop12131415"
# install/run the app
$ npm install .
# will default to putin, obama, ukraine
$ node app.js
# can specify your own
$ node app.js baseball yankees "new york"