One of the conclusions:
"The fourth question combines the question of whether the natural temperature variation combined with the anthropogenic causes of temperature increase will result in significant continued temperature increase. The warming alarmists models predict a rise of an additional 2OC to 5OC as being likely by 2100, but I do not see that as being justified based on present information. Based on a combination of historical trends over the last several thousand years with the recent trends reasonably attributable to anthropogenic causes of temperature increase, it appears that some small additional increase might be reasonably possible (but not certain) by 2100, but most likely within a range < 0.4OC, which would put it in the range of several warm periods in historical times that were particularly productive times."

limitations-on-anthropogenic-global-warming

The article goes over a lot of the issues related to GW. And as general summary it seems to me to be quite informative. I would be interested if anyone can rationally refute any of it.