How does professor Lance Fortnow use Twitter? Posted on March 5, 2010 by admin Lance “-P NP”- Fortnow explains his usage of Twitter. Jason Ruspini and David Pennock should listen. Related PostsThe 80 Best WordPress PluginsTwitter is a flexible, personalized, search engine, pure and simple.Bill Gates now uses Twitter. – Paul Hewitt and David Pennock should use it too.