Psoinik,
We can try to 'share a dream' my way, if you're interested. We won't both be asleep at the same time. I don't think its even necessary for you to choose to do this chronologically ahead of my dream, for reasons I'll try to explain in a separate thread. Ask a question that you're deeply interested in, emotionally and morally. Then one or both of us will dream something that we would not have been able to dream ourselves, that is possible because of the presence of the other person's mind, and the intersection of their aim with ours, blessed by providence. This experiment isn't very 'repeatable' with a particular person because its hard to do more than once without running out of questions we can find answers to. But I've had enough experiences like this with enough different people that I have some confidence it will work. I haven't been dreaming lucidly for the last four years, since moving to my present city. But have had a couple of experiences of this type since then, without trying, so I don't think the ability has abandoned me. The reason for using a philosophical question is the subject has to be of interest for the semi-transcendent part of ourselves that's capable of doing this sort of thing. Questions like "what will be the winning lottery number" just don't turn the crank. I guess to some extent that's specific to my personality also. It works even if your motive or interest is a bit different than mine, as long as there's a way for our thoughts connect metaphorically.
I don't think faith is necessary, skepticism is OK. We only need enough openness that the possibility isn't shut off. If one person is afraid of the experience, or opposed to it, that can be unpleasant though. Each person has a lot of control over how much of their mind is exposed to the other person: that's determined by the nature of the question and what its psychologically connected to. (I have no idea how that works, but it does.) The experience of one's mind not being entirely private may still be a bit freaky though, because it is a lot more direct and personal than speech or writing, at least how I experience it. I think that everyone experiences this at least a little bit through the normal course of living, but without much understanding of what they're feeling.
Another reason I like philosophical/spiritual questions is it raises the subject to a higher, impersonal plane, so to speak, which helps avoid other psychological complications.