Abstract: A system and method for diagnosing a condition or problem (including but not limited to health-related conditions) includes at least one computing device configured to perform steps including collecting and storing electronic data from a search user seeking to obtain diagnosis, applying stored diagnosis rules to the electronic data to identify possible diagnoses each having an associated diagnosis rule trust factor and based on information received from expert users and non-preselected contributing users, and communicating multiple of possible diagnoses based at least in part on diagnosis rule trust factors. User feedback and data mining applied to search data may also be used to help a learning engine improve diagnosis results over time.