Buck, from my reading here is what I saw.
Dr.K found the following information and cited it...
Water vapor makes up 10 times more of the atmosphere than co2.
Water vapor is more effective at trapping ir than co2.
Now, both of those are given as fact by the information Dr.K linked to.
So why isn't there much information on the greenhouse effects of water vapor?
You don't kill the goose that lays the golden eggs.
There is little or nothing man can do about water vapor.
Our society is based on producing co2.
climate change is keeping more climate scientists employed than would be if it weren't happening.
Scientists like to be able to feed their children.
The earth is warming, and co2 is the only thing aiding that eventuality that we have any control over.