Does the developer of a Mac OS X app get the crash reports when the app crashes?
Mac OS X Reference Library Technical Note TN2123 states:


  CrashReporter performs two useful
  actions:
  
  
  When a program crashes, CrashReporter will record a crash log
  (typically into
  ~/Library/Logs/CrashReporter/), and
  inform the user by logging a message
  to the system logging facility.
  In addition, if the program that crashed is running as a logged in GUI
  user, CrashReporter will present the
  user with a dialog asking them whether
  they want to submit a bug report to
  Apple (see Figure 1). If the user
  clicks the Report button,
  CrashReporter displays another dialog
  that shows the details of the report
  (see Figure 2) and allows them to
  comment it before submission.
  


And not much further along, states:


  In this technote I explain how to interpret crash logs that you have obtained from end users.


I believe this implies that the information is not automatically shared with the developer.  The developer needs to "obtain" the crash logs from the end users' ~/Library/Logs/CrashReporter/ folder.