I'll apolagize first since I'm mobile right now my spelling and grammer might be bad.
The Internet is very much integrated into a persons life. We share ideas, connect, recieve feedback and so on and so forth.
My idea is that the human mind is like a webpage People view it and respond accordingly. On the physical aspect people respond to what we say and the emotions we emit.
So perhaps if out mind is a webpage then the entire human race is the Internet. Therefore we are all connected. And together we could all make a website.
A website consists of similar topics and etc. that appeal to people and have a significant purpose.
Taking that to my idea, what if...
Subject A,B,and C try this out.
Subject A would act as Moderator for B and C
B and C agree to A's idea of going to Taco Bell and get 3 Tacos. Concrete ideas and specific goals would be the key point here to ensure safety.
Subject A would then supply the conditions such as sleep on your back , have some Mexican food exactly an hour before, keep some dim lights on etc.
As well as the setting and rules within the dream.
Gravity, NewYork, Nighttime 3 AM etc.
A,B, and C would then sleep.
Hopefully we can test wheather we can meet each other or not.
A key thought here is to not describe yourself to the others because it defeats the purpose of the whole thing. Because then they will try to create a version of you in the dream.
Also trust is needed between the individuals. Although it is hard to have these days.