Make Your Web Applications Addictive: 5 Lessons to Learn from Foursquarehttp://blog.areastudios.com/2010/01/14/make-your-web-applications-addictive-5-lessons-to-learn-from-foursquare/comment-page-1/ by marknutter • 17 years ago 11 0 17 years agoBLblog.areastudios.com