The 2011 GNOME User Survey Results
Most users were taking this survey on their own.
Many users feel the current GNOME version is better than it was one year ago, but a big proportion of the respondents feel that the latest GNOME is worse than a year ago. This aligns with a lot of disgruntled GNOME3 feedback.
Most users though say they are running GNOME 2.x still, while GNOME 3.2 is already more popular than GNOME 3.0 according to the participants.