Having spent time looking at Lindzen's actual research rather than the way it has been portrayed, it appears my statement of Lindzen's change of position may have been a little overdramatic. It appears that the naysayers of global warming have misused Lindzen for their purposes. Lindzen is often found quoted in articles claiming that there is no such thing as global warming. That may not have been Lindzen's position at all.
This is what I find Lindzen's present position to be. This is a piece Lindzen wrote about the IPCC report that he was a member of.
Quote: We are quite confident (1) that global mean temperature is about 0.5 degrees Celsius higher than it was a century ago; (2) that atmospheric levels of carbon dioxide have risen over the past two centuries; and (3) that carbon dioxide is a greenhouse gas whose increase is likely to warm the earth (one of many, the most important being water vapor and clouds)....
What we do is know that a doubling of carbon dioxide by itself would produce only a modest temperature increase of one degree Celsius. Larger projected increases depend on "amplification" of the carbon dioxide by more important, but poorly modeled, greenhouse gases, clouds and water vapor.
source
Lindzen's present position appears to be that as the earth warms from CO2 the cloud cover will change resulting in a cooling effect to counteract the warming. Thus he disagrees with the extreme models that show large temperature increases over the next 100 years.
Lindzen's published piece
Thanks for the link to Lindzen's website Thomas. It has his published pieces and responses to scientific criticisms of his work.