Just saw this post on Psychic Costs vs. Monetary Costs from Catallaxis. 

This dovetails with some of my experience - options options options! 

From an integral perspective, the choices involved are just tremendous - it's amazing, really. 

Diet - Body for Life, or South Beach Diet?
Exercise - Yoga, or Martial Arts or Running or Weightlifting?
Meditation - Vipassana or Mayahana or Advaita or Christian Mysticism or Kabalah?

Even Integral - CIIS or Integral University or Institute of Noetic Science?

This also reminds me of the work done on The Long Tail.  When niche markets abound, the technology that can drive these niche markets become extremely important to reduce the Psychic Costs in a market of multiplicity. 

The review and linked recommendation software for Amazon, for Netflix, and for Yahoo Movies, have been implementations to solve this problem. 

I still believe that this type of software needs to become available for integral practices and integral practice leaders - again, either of whole categores (such as yoga) or particular leaders (such as yoga teachers, spiritual teachers) or of communities.  

I know its considered "bad form", in some sense, to implement these type of open feedback mechanisms for anything other than a "product" - such as movie, music, etc. 

But it clearly makes such incredible sense.  It would make available less well known (but incredibly favorably reviewed) teachers and practioners, it would help stave off the danger from abusive cultism (cultish abusive leaders get bad reviews!)  In general, it would be very very useful, as this type of software mechanism would help provide instant feedback and recommendations, for what actually WORKS for people.