Nah, it's not really to teach people how to survive in a multiplayer environment. From what I hear, a multiplayer environment is just constant, all-out warfare, which doesn't sound appealing to me.
Well, it depends on where you play and who you play with.
If you play on Gamespy with random strangers, then you can pretty much guarantee constant all-out warfare, as well as a turn timer set to Blazing fast speed.

I've played a few games this way before, and haven't ever actually lost a game (being far more experienced than the average player there), but...
boy it gets the adrenaline pumping when you only have 30 seconds or so to move all your military units.

Personally, I don't particularly like this method of play, since it's really not like civ at all - you have no time for thought and strategizing, just build-build-building with the military.
On the other hand, playing online with someone you already know from a forum tends to lead to quite long and peaceful games by comparison. The games that I've played most often are the slow-paced (1 turn per day) huge pitbosses (often with 18 human players), which are certainly not all war-war-war. (Instead, they're mostly diplomacy-diplomacy-diplomacy.

You've got to keep on your feet with organizing and maintaining alliances, otherwise things tend to fall apart quite rapidly.)
The main difference with large multiplayer games (compared to single player games) is that human players are far less predictable and far better at strategizing in wartime than the AI. The element of surprise is hugely valuable in multiplayer: I've won many games simply by a surprise naval invasion of 20-30 units, razing several core cities within a few turns. (This includes the Intersite Democracy Game that finished earlier this year, where the team that I was leading [from the Strategamer site] decimated the CFC team exactly in this way.

But I digress.)
Basically, getting back to the point - I wouldn't expect a game amongst forum members to degenerate into war-war-war amongst the experienced players, even if we
didn't have the rule discouraging war between humans. But let's play with that rule anyway, since I think it sounds like a good idea to help out the newer players.
