There is a lot of interesting talk these days about tapping in to the wisdom of the crowd. Among the most surprising examples is Crowdmed.com which was designed to find diagnoses for illnesses that have eluded physicians. It reports "astonishing" results.
There are no liability risks on the individual "medical detectives" (not required to be physicians) who submit diagnostic suggestions: they are anonymous and submissions are pooled and combined into diagnostic suggestions to be discussed with the patient's physician.
A quick internet search did not reveal anything similar for law. Let me try drawing on the collective wisdom of SLAW readers – are there parallels here for the legal profession?