To save folks time, I will quote directly from the wikipedia article: "The amount of precipitation due to seeding is difficult to quantify. Cloud seeding may also suppress precipitation." The article contains plenty of examples of places where cloud seeding is used, but no data that would back up the "works" claim.

So, what I really want to know is...did that +4 funny (at the time I post this) come from people laughing at you or with you?

If not everyone can profit, wouldn't it be capitalism?