MP can be fun with CIV, but the game takes forever to play a whole game in a single outing, unless it is pretty much total war. You could have settings to make the game coopertive, so victories would be joint, then you could stay as a builder. When I play with friends, we have a rule not to attack for a certain amount of time, allowing each of us to munch on the AI, and build up our empires before total war.
If they had it for playing random players on a website, they should set it up so each game lasts an hour a day, or other user set amount, and then it could either be continued daily, bidaily, or weekly. Another thing about it, with the forums, you could meet people that you are somewhat familiar with, and would know if they sound like someone who would be fun to play with. Still, now that I am out of college, other responsibilities seem to take over.