37 Siginal's design posts have real case studies: http://37signals.com/svn/design http://37signals.com/svn/design http://37signals.com/svn/posts/2991-behind-t

37 Siginal's design posts have real case studies: http://37signals.com/svn/design http://37signals.com/svn/design http://37signals.com/svn/posts/2991-behind-the-scenes-ab-testing-part-3-final http://37signals.com/svn/posts/2991-behind-the-scenes-ab-tes... I plan to publish mine soon. THanks for feedback.