How to make Twinning meaningful????

We had a round table event On Monday 24th January 2010 where we had to create a small presentation to explain to external examiners and a few other important people involved with the University and the Industry. This is my presentation explaning where i am at in my development process.
I am creating small exterior structures located between twin cities and towns all across the world. They will be temporary structures and will have the option of moving around twins across the world to important places in a community (e.g Library, School, Church) to allow communication and create a tighter bond.
The will be digitally enhanced between 2 stages of the experience. A room to view, watch and listen using screens and playback recordings of the sister structure or 'pod'. The moving onto private booths where the user can reply to a chosen recipent or 'pen pal' and communicate.

I have been looking into twins and twin anything really to create some sort of solid connection between the spaces. I looked at how twin towers are connected and twin structures. I found out abou twin traits and personalities and have been playing around with DNA shapes.