Overall I believe this experiment to be a bit tainted by the participants all being active forum members- we stay in moderate contact with each other via the forum and I believe we may be overly tactful when deciding whether or not to be aggressive
So I don't believe our actions would be an accurate in seeing if this would viable for the general public, who don't have contact with each other after games.
While in public chat, I and others spoke like politicians- If asked about an absolute alliance or offence we either put our full weight behind the position, or dodged/avoid the question all together allowing yourself flexibility for when conflict would arise.
Needless to say I myself pussyfooted around any absolutes, aside from a half baked alliance I dubbed the Equator Alliance- Yotta, Myself, and TopKilla- that formed a straight line across the map. I more or less remained peaceful with everyone else, mined when I was sure it was safe and through inactivity and a few minor offenses against others not in the alliance, I secured myself an easy third place.
I should have put the placing aside and focused on the experiment itself, but I've already formed habits on this game and trying to place is hardwired.
Nobody wanted to make a mortal enemy, trades where often confusing- involving gifts and almost gifts- with nothing really being absolute. I felt like a guy in an elevator, bumping would invoke a sorry from me, and conversations where more or less about nothing or bogus alliances.
My view was a bit boring.
Again I think this could be done again with better results using the new Anonymous mode to replicate the mask that total strangers have when facing each other.