Thanks for posting the rules, Mike! But I recall reading more detail on exactly how it's done somewhere. No matter, the point is made with what you posted.
However, after reading the rules you posted I must say that I find it weird that the new spells can be shared by all. Basically they are saying that if some god of fire grants his loyal requesting cleric a new fire spell, then that cleric can easily pass the spell to a cleric of some god of water, and that now that cleric of water can continue to request that fire spell from his god over and over again once he learns the formula. That strikes me as odd. I would like to think that a newly researched clerical spell is more of a type of deal or contract that exists solely between the researcher and his god. Especially when the new spells crosses domains, or spheres of control, or portfolios, or whatever.