Thank you for the reply.  The fact is that it is difficult to trust anyone so you're response is correct. 

I had a company in mind for the escrow, but there have even been doubts about them relating to raising donations for particular campaigns.  I guess we'll have to see if these charities take you up on your offer. 

I see you have an affiliated charities link on your homepage for charities which have taken you up on your offer.  This is great so people know which charities have accept their donation.  Right now we have one, but more will follow.

Here's a list of about 100 charities which are rated 4 star by charity navigator which have donations under 3.5 million per year.  I would suggest adding some of these to your mailing list as these charities are probably looking for non-traditional ways to increase their donations.  It is going to be difficult to bring the Red Cross on board until you have lined up several smaller charities I think and until donationcoin have proven itself.  You may be shooting for the moon which is good, but first we need to just liftoff. :p

http://www.charitynavigator.org/index.cfm?bay=search.results&overallrtg=4&size=1&scopeid=2

I wouldn't email to everyone on this list.  Autism, cancer, kid and animal charities are all popular I would think whereas some of the charities devoted to the arts or media may be too narrow of a field to consider.  If people want to donate to Himalayan Tap Dancers (not a real charity... I hope) then they should probable do an individual donation.   

I would also stay away from politically-charged or controversial charities.

Good luck.