I do believe in the act of sharing dreams and being able to make other people become lucid if you find them--there's a bit about this at the lucidity-institutes website. I've never personally had it happen, but I like to believe I have an open mind about things. I don't just believe EVERYTHING I read, but I do believe in the power of the mind--there's plenty of evidence, in my mind, to support the idea that we humans are capable of much more using our mind than we do.

That said, I don't think merely dreaming someone did something will MAKE them do it IRL. It seems to me, that it's more likely that if you dream something happened or someone behaved in some way, and they do, it would be a precognitive dream.

That's just my own thoughts on the subject though.

~SilverWolf~