http://www.newscientist.com/article/...l-warning.html
http://www.corrosion-doctors.org/Glo...ng/Methane.htm
http://en.wikipedia.org/wiki/Global_warming_controversy
http://www.grist.org/comments/intera...ef/index1.html
They are partial to explaining GW runaway.
Cbacba - climate scientists are predicting clouds have a slightly positive feedback, not negatve as you are saying, but no one knows for sure, consider where the clouds will most likely to be formed, at night and colder regions. England cloudy, Australia sunny maybe?
Secondly, increasing heat in the atmosphere doesn't mean increase in clouds, just means the atmosphere can hold more H2O before forming clouds or raining.