Disappointing. Many times hitting the LinkedIn in button that is supposed to represent that you CAN apply through LinkedIn resulted in an error message.
A large percent of the companies still dont allow you to send via LinkedIn so youre prompted to leave the app. This flags to me that LinkedIn still needs to do some work on capturing the needs of these companies if they want to compete with sites such as indeed, Workopolis, Monster.
Ill keeping using it to provide more feedback.
Amazing blue about LinkedIn Job Search, v1.5.3