Seemingly most valuable when:

• Low dispute value - predictable issues
  
  
• Cost of getting together high
  
  
• Lots of participants
  
  
• Lots of issues
  
  
• Late joiners - benefit of archive
  
  
• Every case?
  

A few of examples: 

• Corvallis School Location
  
  
• Divorce Mediation Experiment
  
  
• Special Education