http://g-ecx.images-amazon.com/images/G/01/ciu/93/28/4b71810ae7a03a007a354210.L._V229095587_SL140_RO5,1,174,177,178,255,255,255,15_AA160_.png David Heinemeier Hansson is a partner at 37signals, where the products produced include Basecamp, Highrise, Backpack, Campfire, Ta-da List, and Writeboard. David created the Ruby on Rails programming framework that powers Twitter, Hulu, Yellow Pages, and thousands of other major web applications. ---- CategoryAuthor