I found some interesting information on Surrogate tapping that you all might be interested in. There is a great article called, "Seven Steps of Successful Surrogate Tapping", by Deborah Donndelinger, Certified EFT Practitioner and Karen McLaughlin, EFT Practitioner that you can find at: http://eftwithdeborah.com/docs/Surrogate_Tapping_Guide.pdf
Each of the articles point out some great ideas on how to prepare to do surrogate tapping, like; clearing any resistance to the issue you are tapping on and any resistance to surrogate tapping (especially if you are doing a global tapping).
Here's another reference for surrogate tapping only this is for Emergencies, emergency responders, etc. and includes the suggestion of tapping to clear the energy of places where "bad" things have happened...check it out at: http://www.emofree.com/pdf-files/Rescuers-WendeWylie.pdf
Deborah and Karen's article referenced "Gregg Braden's work" with regard to the whole concept of if and why surrogate tapping may work, so I looked him up and found some interesting info on his website: www.greggbraden.net, "Building a New Wisdom through Science and Spirituality" that I highly recommend you check out. He's got a video interview that is about the quantam leap/spirituality link that really supports our idea of global tapping.
Hope this is of some use to you.
EFT Practitioner's Pool