Dear "Ecs...",
I'm sorry that I don't have all the details at hand, but over the years I know that there have been at least 2 or 3 successful transplants that accomplished among folks who met at this website. But as you mentioned there is no filtering of offers, so anyone (from any country) can sign on with a bogus "offer". It must be very hard for the patient to have to sort through all these.
best wishes,
Fr. Pat