are you asking for something In the US/canada or in isreal?
I have never heard of those exept people doing it as a privat busniss, 
Posting up somewhere on the net "help me get money for surgery" annoncce, 
thats not what your talking about, I guess?
well I dont know how it is in Canada/Us or isreal but I might know a person who know about the isreal thing.
I will let the english speakers to guide you for the part of the other countrys