In an homage to Andy Baio (http://waxy.org/2004/03/infocombot_for/), I've created a twitter bot wrapper for dumb frotz. To begin or restart a game of Zork, tweet "@playzork play zork".
The code powering it all is open sourced at:
https://github.com/dgouldin/twinfocom
Since twitter will not allow duplicate tweets, you can prefix your commands with any number of periods or delete your previous duplicate command tweet.